Astronomy, Photography and Weather

General Category => Astronomy & Space => Topic started by: martinastro on September 15, 2010, 05:07:13 pm



Title: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on September 15, 2010, 05:07:13 pm
(http://i51.tinypic.com/2l8fbc9.jpg)

(image credit: Michael Jager)

Comet 103P/Hartley 2 is now mag +9.1 in Andromeda and brightening rapidly as it moves NE at 1/2 degree per day. The comet is perfectly placed high in the sky near the zenith and is visible all night long. It will peak at mag +5.0 during late October when it will be 1.12 AU from the Sun and make a 11 million Km pass by Earth making this the closest approach of any comet in the last few centuries (source S&T). It will race across a large portion of sky during Oct and make for a nice binocular and wide field photo opps as it moves below the Double Cluster followed by a very close conjunction with Capella. The comet may be very large when at peak magnitude. Here's a few links for further reading...

Sky & Tel article...

http://www.skyandtelescope.com/observing/home/102632669.html

Finder chart from Skyhound....

(http://i53.tinypic.com/do788y.gif)

Finder chart from Sky & Tel...

(http://i51.tinypic.com/2w4jwxf.gif)

http://media.skyandtelescope.com/images/CometHartley2-bw.jpg (large version of chart)

I tracked down the comet last night using the 8" S.Cass and found it to be a difficult object which required good dark adaption and averted vision. The comet is green in colour, 5-6' in dia, and very diffuse at the edges. With wide field optics/aperture effect the coma my look brighter so large binoculars might produce a better view. Best of luck!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on September 16, 2010, 07:36:49 am
That's great news Martin!  Looking forward to this one, seems ages since we've had a decent comet! :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on September 25, 2010, 09:30:40 am
This is one I'm hoping for a photo opportunity of I see its jumped to mag 6.4 on Heavens Above today.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on September 25, 2010, 04:06:36 pm
There is some discussion on the comets mailing list that this comet is much bigger than most are reporting, telescopes have been getting coma diameters of 5-6' however binoculars in dark skies are showing 24' - thats almost the size of the full Moon, this could be a big diffuse object when it gets close to Earth. It should be shy of mag +6 already, we just need to wait on the Moon to wane now  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Big Dipper on September 25, 2010, 07:20:58 pm
Like Dave I'm hoping to get a photo opportunity, plus a visual one too once the Moon has bu****ed off waned sufficiently. The fact that it's already at around magnitude 6 is certainly very good to hear!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on September 26, 2010, 01:40:13 pm
Great news, now all we need is a dose of clear skies!  I'm hoping to be able to image this, fingers crossed!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on September 27, 2010, 08:20:29 pm
Had an email from the producer of the sky at night today requesting images as they are running an article on the comet, so, if you want a bit of tv fame and you have clear skies drop me a pm and i'll forward the details :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on September 27, 2010, 08:35:23 pm
Thanks for the heads up Mark - all we need is a clear sky now but it ain't happening here tonight so far... :(


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on September 29, 2010, 07:48:21 pm
Clear skies tonight, hopefully we will get a look at Hartley and perhaps even an image if it's bright enough...


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on September 29, 2010, 11:07:46 pm
103P/Hartley tonight at 21.09BST 50mm @ f2.8 ISO1600 25 seconds.
(http://i51.tinypic.com/5a2xs9.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on September 30, 2010, 12:31:11 am
Great capture John!, the nitfy fifty is a beauty of a lens for this work!

Conor and I observed and imaged it this evening from Glenshane before moonrise. Mag +7.2, coma possibly near 15 in dia, it looked fairly large and colourful in the 10x50s. It's proximity to 14 Cass made photography very difficult especially with the slow kit lens but I picked it up anyway. First two images are 18mm and 28mm, the last two are crops.

(http://i55.tinypic.com/2jb9z0k.jpg)

(http://i56.tinypic.com/2qaifqr.jpg)

(http://i54.tinypic.com/29fyz37.jpg)

(http://i52.tinypic.com/2upze5s.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on September 30, 2010, 07:06:14 am
Great shots guys!  Definitely not naked eye for me in Brum, but an easy binocular target never the less.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on September 30, 2010, 03:15:51 pm
Superb Guys well done, Glad you got it. Great to capture it. As i was looking at the pics thought i would have to ask you to line the constellations , but saw you already had it done. ;)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on September 30, 2010, 03:40:09 pm
Thanks Mark and Dave, lol yes the constellation lines were really needed, there are soo many stars in that area that it can be difficult to tell what's what. The sky from Glenshane can be very dark on a good night. Hope you get a chance to see Hartley soon, I hope to be folllowing and imaging the comet on a regular basis.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on September 30, 2010, 05:13:50 pm
Thanks all! Here's another from last night with some things added
(http://i51.tinypic.com/15f623c.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Conor McDonald on September 30, 2010, 06:39:34 pm
Nice shots folks... heres one from last night. Really need a new tri-pod as you can see the camera shake

(http://i53.tinypic.com/24dr3wx.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on September 30, 2010, 07:18:46 pm
Here's my effort from last night:

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/September/30/C103-100930-0240.jpg)
2010 Sep 30, around 0240 UT. It's a crop of the centre of the frame. Canon 40D, 50mm, 30 x 10 sec @ f/1.4, stacked in Deep Sky Stacker.

The distinctive green colour of the comet is obvious in the image but it's hardly a conspicuous object ... the moon didn't help, but it was a just about suspected fuzzy blob in 9x50 finder and not much better with 80mm x24.

Quote
Really need a new tri-pod as you can see the camera shake
I had that issue once. Turned out the concrete slabs of the patio the tripod was standing on were moving very slightly when I walked around.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on September 30, 2010, 07:23:21 pm
Nice one Brian, still good to see.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on September 30, 2010, 09:17:17 pm
More excellent shots Chaps - keep em' coming :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on September 30, 2010, 09:23:08 pm
The images keep getting better and better, nice images John, Conor and Brian. Conor that came out extremely well at 300mm, Hartley is very easy to see with the green colour - great.

Brian, nicely done getting the comet to come up so well even in moonlight, I see it has moved further from 14 Cass making it a more obvious sight, well done on the vivid colour capture too. Not an easy comet to capture by any means. Lets' hope it gets a little better soon.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 01, 2010, 03:27:09 pm
Hartley now being reported with a 20' coma via Spaceweather. Clear skies are forecast tonight  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 01, 2010, 04:34:10 pm
Here is my first attempt at catching Hartley in this heavily cropped image. 50 mm 13 sec f/2.2 1600 ISO. Not the best conditions as it wasn't completely dark and the fog was ready to move in, so I gave it a go. Binoculars are no better. The coming weeks should prove much better. Good luck to everyone!!

(http://i54.tinypic.com/2ccpllk.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: JohnC on October 01, 2010, 05:08:23 pm
Impressive photos. How on earth (no pun intended,Richard lol) but how on earth can you identify that faint  Hartley comet , there's an arrow (a pointer) you've put but even then I had to look hard.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 01, 2010, 06:24:49 pm
Let's say I'm  pretty sure that's Hartley. I was using Heavens Above and their sky map for the position and it was suppose to be right there, it does look a little different than the surrounding star field. I almost didn't post it but you get what you image. With better conditions I hope to do better next time.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on October 01, 2010, 08:11:29 pm
Quote
it does look a little different than the surrounding star field.
It has the characteristic cometary green tinge that appears in colour photos, but is not obvious to the eye. Definitely the comet.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 01, 2010, 08:26:24 pm
Nice capture Richard. Green haze gives it away. Hoping to have a go myself tonight.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 01, 2010, 10:38:45 pm
Well done Richard, you got the sneaky comet despite wrestling with foggy sky conditions. Look forward to seeing more  :)

Got a few shots this evening under pristine skies at various exposures...

(http://i54.tinypic.com/o7m1oh.jpg)

(http://i53.tinypic.com/295wzlj.jpg)

(http://i55.tinypic.com/2eba151.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 02, 2010, 12:08:49 am
Well done Richard! Here's some from tonight.
(http://i56.tinypic.com/zo7pfq.jpg)
50mm f2.5 25"
(http://i51.tinypic.com/4k8g9s.jpg)
70mm f5.6 30"
(http://i53.tinypic.com/2dqpqw5.jpg)
135mm f3.5 30"


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 02, 2010, 01:00:15 am
More good captures guys. Caught it myself tonight but have been unable to upload them. Showing upload file full, when using url telling me i've already posted them all with size limits. ???


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 02, 2010, 01:17:12 am
Have you tried www.tinypic.com Dave?, use the IMG URL and the image should upload fine. Hope you get the images posted  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 02, 2010, 01:38:29 am
Taken at Loch Doon, Dalmellington, Session cut short due to broken remote cable. Which was a shame as it was a great sky.

(http://farm5.static.flickr.com/4109/5042418517_6b7d2e62ac_z.jpg)

(http://farm5.static.flickr.com/4112/5042418423_e1e2b27ce9_z.jpg)

(http://farm5.static.flickr.com/4083/5042418301_21b3e02caa_z.jpg)

You guys have been getting some good images lets hope it gets a burst of light intensity. John thanks for pointing out the NGC objects i would never have know.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 02, 2010, 01:44:25 am
Congratulations Dave, great to see you picked up Hartley tonight, you have even captured the green colour in the cropped image - excellent. Love the MW capture too. Sorry to hear about the broken cable,hope you can get a replacement soon. Looking forward to seeing more images  :)

John, great shots, Hartley came up extremely well at 70mm with a minimum of trailing, that's an impressive result for a 'slow' lens. Keep the images coming....


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 02, 2010, 02:11:15 am
Those are some great shots everyone, especially the latest from Martin, John and Dave. Completely fogged over all day here so I don't expect any action tonught. Good Luck!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 02, 2010, 01:08:34 pm
Brilliant images guys, glad you're getting some views in - alas no clear skies for me as of yet...


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 02, 2010, 04:16:40 pm
Thanks all! Well done Dave, I know Loch Doon, you have some of the darkest skies in the country there. No probs re the NGC's, in fact if you look closely at our closeups you can see the beginnings of the Pacman Nebula just left of the comet.

Martin, the 70mm does a good job but it would do better driven. Must wind that old clock-drive I used for H-B to see what I can get.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 03, 2010, 10:55:29 pm
I could see Hartley with the naked eye tonight under a stunning crystal clear sky at a dark location outside of town. Averted vision was needed however there was no question about it's brightness. A few images...

(http://i52.tinypic.com/14ilzd5.jpg)

(http://i52.tinypic.com/b66iwp.jpg)

(http://i55.tinypic.com/2mmy1ap.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 03, 2010, 11:37:25 pm
Great additions Martin!  I must thank you, as after looking at your pics I decided to check if it was clear - lo and behold it was, and with the help of your latest images and the chart at the start of the thread set out to find Hartley.  Using my 15x70 binoculars hartley was easily visible using averted vision, and occassionally using direct vision.  Now, bear in mind here i'm observing from the suburbs of Birmingham where it is light pollution central, also there was haze / mist about aswell, also bins were handheld, so i'm pretty pleased with myself!

I also found myself exploring and taking in all the star clusters in and around cassiopeia, forgot how much fun binocular observing is!  Swinging around Jupiter and moons are plain to see, and throw in uranus in the same fov and my sunday night is made!

Gonna have to keep my eye on Hartley, it always feels good to know you've seen a comet!

Keep the images and reports coming folks, this is a great thread!  ;D


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 03, 2010, 11:59:19 pm
Well done Martin seeing it with the NE, my eyesight's not good enough for that but it was very easy in the 10x50 bins, it has noticably brightened.

Mark, great that you've seen it, I'm in the middle of a housing estate but fortunate that most of the lights are blocked from my back garden. Bins are a great way to scan the sky. The comet is now quite an easy target for the 1.8 lens, here's an image taken a while ago. That's the Perseus Double Cluster at the bottom.
(http://i53.tinypic.com/73gq6d.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 04, 2010, 12:43:39 am
Just in from another visual session, I can see the comet naked eye quite easily now that Cass is at the zenith, it stands out so much more compared to earlier!, I could see Hartley, Double Cluster, and M31 in the same visual triangle. The comet actually looks massive - even larger than the binocular view, I only had a few min's of dark adaption and I could see it, anybody with clear skies now should give it a go. For naked comparison it is fainter than M33 (as seen with naked eye) and also fainter than the Gegenschein however it is still readily visible. The view through the scope is so much better too - this comet is getting more interesting by the night!  :)

Excellent image John!, Hartley is sticking out like a sore thumb, that's got to be the most clear DSLR widefield image I have seen of the comet so far  :)..and what a stunning sky tonight too!

Well done Mark, I'm delighted you saw the comet through the trusty binos, great fun without the shackle of  a telescope isn't it, not to mention so much quicker and more freedom. The fact that you saw it at all with the LP glow is really something. Keep following it  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on October 04, 2010, 01:42:00 am
I'm still not sure I can see it with NE.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 04, 2010, 04:17:46 am
Great images and reports everyone. Due to cloudy and foggy weather I've been unable to do any viewing the past several nights, the forecast looks better towards the middle of the week. Hopefully I can get in on the fun at that time. Keep em' coming!!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 04, 2010, 06:11:29 am
Some more good captures Martin And John awaiting my new remote cable so can get out again. Good to see others seeing it too.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on October 04, 2010, 06:54:07 am
Nice sight in C11 x70 but imaging this comet seems to be jinxed for me ... apart from the very small scale effort above, two tries, two equipment failures ... battery went down the first time, clutch slipping the second. Lack of clear nights is the problem, equipment doesn't fail when it gets used regularly.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Paul on October 04, 2010, 11:30:54 am
Got this last night.....

(http://niphotography.co.uk/images/hartley101003b.jpg)

Actually I messed up the camera settings and took 20 x 30secs instead of the intended 10 x 60secs by the simple mistake of setting the shutter to 30secs instead of B - the intervalometer attached was supposed to deliver 10 x 1 min but the interaction of the two settings gave me this! 200mm lens @ f5.6, ISO800.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 04, 2010, 02:02:25 pm
Thanks lads! Nice shot Paul, I take it that was maybe driven? Here's a couple from 01.30BST when it was at the zenith. One wide and one crop from another frame, 25" at f2 50mm lens. The sky was fantastic last night, quite a few meteors as well!
(http://i52.tinypic.com/33l038x.jpg)

(http://i55.tinypic.com/2u6z5p5.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Paul on October 04, 2010, 02:09:02 pm
Well caught John - nice to see Hartley in relation to the Double Cluster there - hoping for a clear night on 7th or 8th to get the close approach.

Yes, my camera was sat atop my LXD75 mount for this shot.

Paul.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 04, 2010, 02:57:56 pm
Great image Paul, those exposures worked out very well and the tracking really helped alot. Looking forward to seeing those Hartley-Double Cluster encounter images. Looks like it could clear up tonight again at some stage behind the front.  :)

Great images again John, the sky was incredible last night and Hartley looked so much better at the zenith and seen without optical aid half a dozen times in that stunning sky. I also saw many bright meteors, several were borderline fireballs. Top quality night  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Conor McDonald on October 04, 2010, 03:53:35 pm
I really need to start stacking

(http://i108.photobucket.com/albums/n16/Conor433/IMG_4126.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 04, 2010, 04:41:44 pm
For once our weathermen were wrong for the good, the skies cleared last night to a less than pristine sky, but it got the job done.
No chance to see Hartley naked eye because the Milky Way was barely visible which is unusual here on a moonless night, suppose to be better mid week when Hartley nears the Double Cluster. Keep my fingers crossed. Just want to make a comment on what beautiful images all of you are posting and they should only get better in the next couple of weeks. Paul, that guided one is exceptional!!

50 mm 13 sec f/1.8 1600 ISO

(http://i54.tinypic.com/2zhoyti.jpg)

50 mm cropped 30 sec f/1.8 1600 ISO

(http://i52.tinypic.com/2upxqx2.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 04, 2010, 05:58:51 pm
Excellent stuff Richard!, the 50mm full frame capture is great showing the intense green coma and Cass standing on end - great composition. Glad to see the forecasters got it wrong, I hope the weather improves for you this week, it would be great to see your results when Hartley is near the Double Cluster. Keen them coming...  :)

Conor, nice one, looks like you are zoomed in quite a bit for that one, the comet came out great!  :), lovely green colour to the coma which really stands out. That sky last night was amazing.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 04, 2010, 09:09:32 pm
More brilliant additions guys!   ;)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 04, 2010, 11:22:22 pm
Couple of shots from tonight, is it just my imagination or does Hartley look even better than last night?, could see it easily with the naked eye. First image is with a huge wind turbine in the frame, second is over the top of Glen Chapel.

(http://i52.tinypic.com/4kwkmh.jpg)

(http://i53.tinypic.com/2a67bz4.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 05, 2010, 12:50:25 am
Great shots Richard, at last you getting a go at this guy.

Martin, I'm not long in there and with blinkered vision I was 99% sure I could see it with the NE. I took a couple of wide shots but they're still in camera as I'm doing a long process on an image of the moon taken some time back. On that I would say it is slightly brighter than last night. Long may it continue!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: paulster78 on October 05, 2010, 01:40:49 am
Ive been following this thread with great interest, everyone has been getting some brilliant results and amazing shots of the comet.  So on Sunday night i thought i might try and catch this guy albeit from my back garden in Omagh.  My only trump card was a newly acquired 50mm 1.8 lens.  Light pollution is evident from the orange tinge but not a bad result.



(http://i613.photobucket.com/albums/tt215/paulster78/Astronomy%20Related/Hartley2.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 05, 2010, 02:14:50 am
Those are great shots Martin, love the background effects you have added. It looks like a clear night here shaping up so I'll be out checking things out. Starting to get a nip in the air, mid to low 40's, that's a nip here on the Oregon Coast. Quite a difference from the 116 degrees I had last week in Southern California.

Glad to hear you picked up the 50 1.8 Paul. I think you'll be very pleased with the results you receive for such an inexpensive lens. It really does pay to try and get to some dark skies though, that's when you'll really see the difference! Great picture!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 05, 2010, 08:40:54 am
We had beautiful, dark skies here on the Oregon Coast tonight so I was bound and determined to get some more shots of Comet Hartley before the weather turns again. I've been storing my Astronomy Club's 10" reflector in my garage and set up a rough alignment and turned on the drive. I jury-rigged my camera to it (some of you would probably have a heart-attack to see it). I couldn't see through the viewfinder so I was kind of shooting blind. A lot of shots of nothing but stars, but here are the best of the lot. Comet Hartley was seen easily with the naked eye, and shown fantastic with the 10". The next weeks should prove very interesting if Hartley continues to brighten as expected.

50 mm 85 sec f/1.8 1600 ISO  Upper left of M31

(http://i53.tinypic.com/1060spv.jpg)

50 mm 25 sec f/1.8 1600 ISO  Upper right of the Double Cluster

(http://i55.tinypic.com/14e8n0l.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 05, 2010, 08:49:27 am
Well done getting it caught Paulster. Nice clear pictures Richard , The double cluster is very clear , Spaceweather saying comet will only be 1 from the cluster on the 7th should make for some good shots.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Paul on October 05, 2010, 10:12:22 am
Looks like this comet is beginning to brighten up a bit, though I still haven't seen it naked eye. Here's a stack of 6 x 10secs ISO1600 with the 50mm wide open at f1.7 from last night....

(http://niphotography.co.uk/images/hartley101004.jpg)

Paul.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: paulster78 on October 05, 2010, 01:18:09 pm
Thanks Dave and Richard.    Richard i will be getting out to a dark sky location on the next clear night to hopefully get a better go at it.  More great shots too Richard, M31 looks so clear :)

Martin the composition with the wind turbine is class-great idea.  :)

Great shot again Paul.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 05, 2010, 10:41:59 pm
Well done Paul on catching Hartley from under the bad LP - that takes some going and you still got the great green colour too. Hope to see more of your images  :)

Richard, excellent images and the detail/resolution is simply stunning  :)

Paul, loving these tracked and stacked images, I see Hartley is making a beeline for the Double Cluster on your image - everything is set for a great conjunction, just hope we get the clear skies now.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on October 06, 2010, 06:06:00 am
Finally got a half decent shot of this comet. A little interference from high cloud, hence the haze around the brighter stars.

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/October/06/C103P-101006-0321-300F4.jpg)
Canon 40D, 300mm f/4, 11 x 60 sec @ f/4, stacked in DSS. Central exposure time 2010 Oct 06, 0321 UT.

I suspected the comet was visible to the naked eye, but only marginally so with averted vision - about as hard as M33. It's a nice sight with 80mm x24.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 06, 2010, 06:39:17 am
That's a winner Brian, best I've seen so far, great shot!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 06, 2010, 06:43:41 am
Cracking shots!!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 06, 2010, 07:55:19 am
Kind of a paltry attempt after Brian's class shot, but Ill post it anyway!

50 mm 15 sec f/2 1600 ISO

(http://i56.tinypic.com/2l9t8x.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 06, 2010, 01:07:27 pm
Some good pics coming in like the stacked photo Paul very clear. Superb close up Brianb, and another good capture Richard my to cable remotes arrived today so back in action.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 06, 2010, 01:47:35 pm
Brian, 'half decent' is rather modest lol - that's a stunning image of Hartley and the best I have seen yet, congrats on getting such an excellent capture as I know the sky wasn't the best last night with all that moisture.

Richard, great stuff and keeping them coming, the comet must look very nice from your dark location, it won't be long before you get those beautiful pine trees in the frame  :)

Dave, great to here you got the cable remote today, hope you get clear skies tonight.

Hartley is now being reported as naked eye by many observers with latest mag est at +5.2 with a coma dia of 45' (bigger than full Moon!) at D.C: 2.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 06, 2010, 03:33:22 pm
More beautiful shots guy's, I saw it this morning with the naked eye using averted vision, my first "proper" NE eye sighting. Got some shots but was troubled with bands of high cloud, and they wouldn't come close to to the new images on here. I might post one later, as I have been busy with other things.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 06, 2010, 10:30:02 pm
Congrats on seeing it with the naked eye John!

Conditions aren't as good here tonight with moisture and reduced trans, however could still see Hartley without optical aid, and getting close to the Double Cluster. Hoping for a better look later when it's at the zenith.

(http://i56.tinypic.com/2rmvy8j.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 06, 2010, 11:55:46 pm
It's really apparent that it's diameter is increasing and looks like it's picking up a little speed as it heads toward the Cluster. Rather cloudy here this afternoon, hopefully it will blow over by later tonight. Great wide angle shot Martin!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 07, 2010, 12:02:14 am
Thanks Martin, I always love to see a comet NE, gives you that buzz!

Here's another wide shot for you Richard taken a little while back. Trans not as good just now with a mist forming, glad I got a few shots earlier. Hope it clears for you later.
(http://i55.tinypic.com/30a6su8.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Paul on October 07, 2010, 01:37:34 am
Getting close now...

(http://niphotography.co.uk/images/hartleydoublecluster101006a.jpg)

Stack of 10 x 30secs ISO1600 135mm/2.8 @ f4 Sony A700 - cropped a bit in PSE8

Paul.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 07, 2010, 07:06:41 am
Thanks for the wide angle shot John, I love the tree branches in the photo, it gives it some scale. Weathermen were wrong again for tonight, clear and got some more shots in.

That's a great closeup with the 135 Paul. That's a great piece of glass. The Double Cluster is looking fine. Your's and Brian's shots have shown just how large a coma Hartley is producing.

Here is my effort for the night.

(http://i51.tinypic.com/20tjdkk.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 07, 2010, 04:10:48 pm
Excellent images John, Paul, and Richard - they keep getting better and better  :), nice to know the weather man was wrong again Richard, reminds of the situation here for most of the year  :)

Those tree branches really set off the image John, hard to beat a bit of foreground for scale however that's extremely difficult to do as this is comet is soo high.

Saw it very clearly with the naked eye last night at 03.20 BST beside the double cluster, what blew me away though was the Gegenschein at the same time - wow, it was brighter than Hartley and very well defined against a transparent black sky background, its shape was text book like an elongated oval or rugby ball with the zodiacal band extending away from it to the E. It can be found under Aries and extending towards the Hyades, wish I could get an image of it.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 07, 2010, 05:38:31 pm
Great images guys, Paul that closeup is a cracker. Thanks for the comments re the "tree branches"! However it's a fix ;D The tripod was stuck up against the fir boundary hedge between myself and my neighbor. Remember the Holmes images Martin? I wish I had tall trees like Richard but I don't.

I saw the Gegenschein last night as well Martin, probably the brightest I've seen it. At one stage I thought it was high cloud but then I could see the stars through it, it was amazing, and oval shaped as you say, must try to get it on an image.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 07, 2010, 06:34:07 pm
I remember the Holmes and trees images very well - fantastic composition and perfect for comets. I might go in search of some tall trees tonight as I think foreground really sets the images off, I see cirrus cloud building in the W now, I just hope it doesn't mess with the sky after sunset. Yes the Gegenschein looked like a cloud - amazing!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Paul on October 07, 2010, 11:24:34 pm
Here's the lineup tonight - 200mm f3.5 lens wide open - 12x 30secs ISO1600

(http://niphotography.co.uk/images/hartleydc101007a.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 07, 2010, 11:37:03 pm
Excellent Paul - stunning!!, that has the wow factor  :o - stuck for words

I feel embarrased posting these...

Was up at Glenshane tonight watching the comet and just messed around with wide long shutter speeds, Milky Way was incredible and Hartley and Double Cluster looked great through my scope, both where even in the narrow fov of my 32mm 1.25" eyepiece. The coma has an obvious condensation and bright false nucleus, not to mention that vivid green atmosphere of huge size. The Naked eye sight was less impressive tonight as the larger outer coma was swallowed by the stars within the cluster and by it's location within the brigher Milky Way band.

(http://i53.tinypic.com/30kzjb8.jpg)

(http://i56.tinypic.com/1okoy8.jpg)

(http://i54.tinypic.com/b8n2ty.jpg)

(http://i56.tinypic.com/htipmw.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 08, 2010, 12:16:25 am
Congratulations Paul on Spaceweather!, you are on the homepage which doesn't surprise me  :) - however what does surprise me is the disinformation on the main feature above the links - 'most observers agree that the comet is not yet visible with the naked eye' and that the coma is 7-8' in dia - what utter nonsense!, I can't believe that has made it onto SW. The comet has been naked eye for many nights now and the coma is larger than the full Moon, by that I mean the large faint outer coma, some observers and imagers have been estimating the diameter at 45', this large size could be seen with without optical aid a few nights ago before it entered the denser portion of the Milky Way - astonished by the bad reporting.  >:(


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 08, 2010, 02:21:39 am
Great shots Martin! Trees are nice when you can go looking for them to accent your photos, but they are rather a pain when they are on your property and one has to deal with them night after night!

Another fine image Paul. The weathermen finally got it right, raining now and expected the next 3-4 days. Our rainy season has fianally arrived!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on October 08, 2010, 03:11:22 am
The Double Cluster looked bigger than usual tonight (until the cloud moved in) due to the presence of the comet. The comet itself was obvious even in 4x20 binoculars but I wasn't sure I could actually see it with the naked eye - all those stars are confusing ....

Here's my effort at imaging the fly-by of the Double Cluster.

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/October/07/C103P-101007-2210-300F28.jpg)
Canon 40D, 300mm, 61 x 30 secs @ f/2.8, stacked in Deep Sky Stacker using the comet mode to remove its apparent motion. Central time of exposure, 2010 Oct 07, 2210 UT.

Martin: the coma diameter seems to be about the same as the distance between the elements of the Double Cluster i.e. 30' - but longer exposures and/or a darker sky and/or a light pollution filter might well reveal a larger extent.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 08, 2010, 08:54:23 am
And a fine effort it is Brian, what a beautiful sight!!  Thanks.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 08, 2010, 02:37:20 pm
Excellent image Brian!, the size of the coma in comparison to the double cluster really speaks for itself. The fainter green coma outside the blue looks very large and tenuous as it fades into the background sky - wonderful shot.

Richard, I can fully appreciate where you are coming from, if you have trees around you all the time then one can get sick of them, however on the plus side they do make a nice foreground for astro images which look so much better than having street lights, chimney smoke and rooftops in the frame which is all I have around here.  :) - I prefer nature's foreground any day  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on October 08, 2010, 02:54:29 pm
Quote
on the plus side they do make a nice foreground for astro images
And forests help preserve steady seeing, unlike concrete, tarmac & tiled roofs, not to mention domestic & industrial furnaces  >:(


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 08, 2010, 05:17:33 pm
Brilliant all round again! :D


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 08, 2010, 08:59:55 pm
Nice updated Sky & Telescope magazine article on this comet...

http://www.skyandtelescope.com/observing/home/102632669.html


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Roman White on October 08, 2010, 09:31:32 pm
Wow, I have finally seen it last night from a village site (Bortle 4 / 6.1m) - great, and seems to be even better in a week or two . My 11th comet as well :)

Excellent shots there, especially Paul's one - very close to the visual impression with my 20x90 binos.

P.S. offtopic: there was some noticeable Draconid activity on Thursday evening (7/8th)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Big Dipper on October 09, 2010, 06:15:48 am
'Fraid I've not really had anything interesting to add to this thread although I've found it a thoroughly enjoyable read since it was started - not only for the reports and superb images but also for the overall 'atmosphere' of excitement and enthusiasm emanating from it!

Here's a quick animation which I've been faffing about with since I took it on Wednesday evening (alas the last two nights have been clouded out). it's a series of 90-second (or so) shots taken over a two hour period with my Astrotrac & Canon 350D' fitted with my 135mm lens & Orion LPR filter.

I must confess to being somewhat 'green' when it comes to doing animations, but it does show the swift movement of the comet against the background stars.
(http://i848.photobucket.com/albums/ab50/astrochat/Big%20Dipper/hartleyanimation1.gif)
Unfortunately health-wise I was feeling very run down when I was taking  the shots (I also tried to convince myself that either Thursday or Friday night would be clear) so didn't take the time & effort to frame things to also include the Double Cluster. :(


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 09, 2010, 07:45:21 am
Thta's a great idea Andy, it turned out very well. Yes. it would have been spectacular with the other two nights, but as you say, it really shows how fast Hartley is moving across the heavens.
You mention the enthusiasm and excitement this small comet has stirred all over the world, can you imagine if we had the digital age we do now back in 96' and 97' with Hyakutake and Hale Bopp. People would never sleep, be up all night taking shots and all day processing them. Today I was looking at some of my scanned photos of those comets and dreaming about the next truely big one when it comes. I hope it's not too long!!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 10, 2010, 12:34:44 am
Nice closeups and nice animation Andy, hope you're feeling better!
Here's a shot from earlier with the 50mm at f2.2 25secs, there is a lot of haze about tonight so couldn't see it with the NE. It looked massive in the 10x50's though, but I thought quite faint, must have been the seeing!
(http://i54.tinypic.com/28j9njk.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 10, 2010, 01:13:37 am
That's a nice image John!

Andy, fantastic animation there, great work!

Unexpected clear skies tonight and I thought the comet looked stunning visually, best view I've had yet. Easy with the naked eye as a bright fuzzy 'ball' below the double cluster which really jumped out from the bino fov. The view in the 8" S.Cass was rather striking with CC and FN clearly visible, this could be one of the most green comets I've ever seen. It should put on a good show this week, really enjoying this comet and loving the energy in this thread  :)

(http://i52.tinypic.com/33jj0p2.jpg)

(http://i52.tinypic.com/ayxflv.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 10, 2010, 05:05:46 am
Great shots John and Martin. Probably won't clear here until Monday at least, then the Moon starts coming into view. Good luck and continued good viewing to the rest of you.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 10, 2010, 09:13:28 am
More fantastic pickies chaps!  I have to echo what Martin says about this thread it has become one of my favourites, I keep finding myself checking back again and again for updates.  I just wish I had more in the way of clear skies to actually get a look / pic of the comet!  Keep em' coming! :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 10, 2010, 06:54:42 pm
A coma diameter of almost 1 degree has been confirmed on Hartley, for those who don't know that means the comet's outer atmosphere is twice the apparent size of the full Moon!

http://comet.observations.free.fr/display-obs1.php?Num=1049


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 10, 2010, 06:57:22 pm
This is interesting...

http://transientsky.wordpress.com/2010/10/08/update-on-comet-hartley-2/

Peak brightness is now predicted at +4.5 and +5.0 - brighter than expected.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 10, 2010, 07:11:14 pm
Like the Anim Big Dipper, and Johns9929 /Martins captures very good, i will have to give it another go. Good link too Martin book marked :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 10, 2010, 07:14:41 pm
Interesting developments... 

Lovely and clear for me tonight, have gone through a operation of military precision this eveing preparing myself and my equipment to try and get some images of this lovely comet.  Don't think my light polluted skies will allow for the wide fields that some of you guys have been getting on here, so going for a close up with my fast short focus refractor.  Just waiting for it to go dark properly then i'm going to get setup...


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 10, 2010, 07:17:55 pm
Good luck tonight Mark and Dave  :)

WOW - check out this image on SW showing Hartley's HUGE coma...

http://www.spaceweather.com/submissions/pics/m/Mike-Broussard-103p-doublecluster-south_up_1286630915.jpg?PHPSESSID=vae5gn3ao5n5sccqelj3h3vdj5


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 11, 2010, 06:50:04 am
Unable to view Hartley the past three nights because of the weather, I was pleasently surprised to see how far it had traveled and how much brighter is. It's very recognizable if you know where to look. I was pointing it out to my wife and neighbors tonight, they didn't seem too impressed because they think all comets should look like Hale Bopp or Hyakutake.

(http://i51.tinypic.com/egz6z8.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Paul on October 11, 2010, 08:40:32 am
Caught this shot at 0400 this morning - stack of 9 taken with 50mm @f2.5 10secs ISO1600 static tripod mount. Comet seems to be brightening to the extent I can now see it - just about - with averted vision from my not very dark location

(http://niphotography.co.uk/images/hartley101011.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 11, 2010, 09:32:22 am
Cracking Captures Richard and Paul so clear.

Caught these last night about 10pm.  F3.5, 1600ISO, 30secs and longer. Sorry about noise. Tried Neat Image (any advice welcome) still pleased with catching another comet. Tried inverting one of the pics too.

(http://farm5.static.flickr.com/4085/5070550931_7cee03b917_b.jpg)

(http://farm5.static.flickr.com/4109/5071157080_8045a66b86_o.jpg)

(http://farm5.static.flickr.com/4126/5070551043_58968b9797_o.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 11, 2010, 03:22:39 pm
Great images all! The comet from here this morning was great looking, and visible to the NE quite easily when at zenith. In the 10x50 bins you could see more of the large coma and the colour, my first time seeing that in bins. Here's an image taken this morning, I've been trying this stacking lark but not very successfully. I take it Paul you are taking RAW's? I can get a result but it's nowhere near your's :-[ Above and right of the comet you can see either a faint sat or a meteor!
(http://i56.tinypic.com/fq61x.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 11, 2010, 04:21:13 pm
These are all fantastic images everyone!, in fact they just keep getting better and better, splendid results coming in from everyone using different cameras and shooting methods, keep them coming in as this thread is fast becoming comet eye candy  :)

High pressure is killing the quality of the sky from here, and will continue to do so for the rest of the week, a great amount of haze/murk with fog last night which destroyed the trans, however having said that the comet still looked great when at the zenith during the hours after midnight and can be seen confidently with the naked eye. The green coma through the 8" LX10 was amazing and filling the entire field, I thought at one stage I could trace the outer coma by manually slewing the scope from the central condensation out to either side until the 'hazy' appearance of the field turned much cleaner and darker, I'm sure this must have been that vast 1 degree outer coma.

Did anyone see the 'new star' last night around 03.00 in Cetus very close to and below Mira?, it was strange because it was visible for at least 10 min's and showed no obvious motion at all and just slighty fainter than Mira, it looked like a nova then vanished, I'm assuming it was some kind of strange sat, maybe a geo?. I have a bad image of it taken through fog, the 'guest star' had my attention for a while. I've seen these things happen before but never for so long and with no motion.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 11, 2010, 04:24:31 pm
Just for those checking the thread with limited observing experience, here's the finder chart from sky & Telescope again, it's the best around.

(http://i56.tinypic.com/swvdqt.gif)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on October 11, 2010, 04:46:29 pm
Quote
Did anyone see the 'new star' last night around 03.00 in Cetus very close to and below Mira?, it was strange because it was visible for at least 10 min's and showed no obvious motion at all and just slighty fainter than Mira, it looked like a nova then vanished, I'm assuming it was some kind of strange sat, maybe a geo?. I have a bad image of it taken through fog, the 'guest star' had my attention for a while. I've seen these things happen before but never for so long and with no motion.
No I didn't see it, but that doesn't mean it wasn't visible. Concentration was elsewhere at the time ... A geosynchronous satellite is so far away that getting a mag. 3 or 4 "flare" is unlikely. And geosync sats are way south of Mira as viewed from NI, dec around -12 degrees. Could be something like a course correction / orbit insertion rocket burn associated with a satellite on its way to geosync orbit.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 11, 2010, 05:16:33 pm
Thanks very much for the info Brian, image is still on the camera but I can rule out a 'star' as the culprit, I zoomed in deep on the image and the stars are trailed although the suspect seems completely stationary on the image so I'm assuming it must be a man made object?. Will post the image later on another thread out of interest. I only noticed the 'guest star' since Mira looked so bright, then the consetellation had that 'look' as if something wasn't rite.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: paulster78 on October 12, 2010, 03:37:36 am
Excellent images coming in here, heres my effort for tonight 50mm, f2, iso 400, 30secs taken at 02:08.  Took myself out to a dark location this time, still alot of moisture about with dense patches of fog but i got to a high location above it all.

(http://i613.photobucket.com/albums/tt215/paulster78/Astronomy%20Related/Hart1.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 12, 2010, 08:00:08 am
A great shot Paul, makes all the difference in the world getting to a dark site where you don't have to deal with LP. Did you try any other ISO's besides 400? As dark as the sky looks you probably could have pulled out a little more without too much noise. Thanks for the photo!
Here is my photo for the night. 50 mm 15 sec f/1.8 1600 ISO

(http://i51.tinypic.com/2uihgci.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: paulster78 on October 12, 2010, 09:29:03 am
Thanks Richard, i was experimenting with iso and shutter times, i could have pushed it to 800 iso no problem but after that i dont like the way noise impacts the image on my camera( i actually thought i was on iso 800 for this shot ::)) .    Another super shot Richard, keep up the good work.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 12, 2010, 03:47:53 pm
Here's one from this morning before all the fog rolled in taken with an old 135mm lens 34 sec at f3.5. When the fog came I couldn't see the far side of the street!
(http://i54.tinypic.com/dq55ht.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 12, 2010, 04:08:08 pm
Thanks Paul.
Another great closeup John, that 135mm really gets in there and shows just how large Hartley's coma is getting. I'm going to have to put my 50-250 on and give it a try though I think it's a bit too slow to capture much. What the heck, it's free!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 12, 2010, 04:19:17 pm
Great images everyone, just to add another to the collection, taken last night before 03.00, fog was a major problem and affected the trans but even so I could see Hartley easily with the naked eye, even it's green colour was obvious without optical aid, only 8 days to close Earth approach!

(http://i56.tinypic.com/9kmg3q.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 12, 2010, 04:44:54 pm
Thanks Richard, yea sure give it a go, nothing tried nothing gained. I had intended using my old clock drive and even had it lined up then that fog came. It was useless I couldn't even see stars at the zenith!

Martin, you were lucky you could see that much by 3am, you certainly wouldn't have seen it from here!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 12, 2010, 05:27:41 pm
The fog was certainly bad last night, from the country the darker sky made the comet not so bad to see but I had to wait between fog banks to see it, and once the fog arrived the temp dropped like a stone, it was the coldest night of the season so far, I'm yearning for a clear trans sky once again but high pressure is playing it's usual tricks with us.  :(

The clock drive should produce great results  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 13, 2010, 12:52:21 am
Worst fog of the season so far!, observing was impossible, I drove to the top of Glenshane and got above it all where the sky was clear, dark, and perfect. Hartley was to the E of Mirfak and easily visible with the naked eye. It was obvious for those that lower levels that observing was out of the question.

(http://i54.tinypic.com/33kb0hf.jpg)

(http://i54.tinypic.com/9hqkxj.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 13, 2010, 06:48:40 am
High cirrus clouds today cleared to a rather warm evening for October. Here is my shot of Comet Hartley for tonight.

50 mm 15 sec f/1.8 1600 ISO

(http://i56.tinypic.com/2a7vmsi.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 13, 2010, 07:26:27 am
More brilliant shots Everyone!   8)

I got some images on monday night, but, as of yet, haven't had time to process them properly - will be sure to get them up here for y'all :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on October 13, 2010, 09:21:45 am
Quote
It was obvious for those that lower levels that observing was out of the question.
Ummm. It was OK (not great) here until approx. 11 pm when cloud spread in (didn't blow in, just formed in place, starting in the north) & very soon became a total greyout. Transparency was below what it should have been but the major provblem was light pollution scattered back from the haze.

Hartley is huge & diffuse, seeming to fill most of the (3 deg) field of my 80mm f/6 achro x24. Hard to see with NE because of the poor transparency.

Unfortunately it appears that the chances of the cloud breaking again before closest approach / bright moon period are so close to zero as makes no difference.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 13, 2010, 04:38:15 pm
Beautiful image Richard, nice dark background with a very obvious comet Hartley standing out proudly against the background stars  :)

Interesting obsv Brian regarding the coma almost filling the 80mm FOV!, I'm sure this comet has to be much bigger than what others are reporting. Sky is overcast here at the moment and not looking good for tonight but we shall see what happens.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 14, 2010, 12:25:16 am
Nice to see good images still coming in, been fogged out here last few days and being backshift till Sunday doesn't help, so nice to see others images. :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 14, 2010, 04:57:48 pm
Last night's effort.

50 mm 15 sec f/2 1600 ISO

(http://i51.tinypic.com/2lk5hqw.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 15, 2010, 12:10:08 am
Great image Richard!, comparing this one with your previous shows the comet's motion extremely well. Thanks for showing us what the comet is doing since we have been clouded out here for the last two nights  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 16, 2010, 08:07:23 am
We had very thick cirrus clouds all day and most of the evening, but I popped my head out about 23:30 and found somewhat of an opening to image Hartley. Kind of washed out from the clouds but still shows pretty well.
Did anyone have any luck with the ISS and Sirius?

(http://i55.tinypic.com/28s6jgy.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 16, 2010, 02:54:08 pm
That's very nice Richard!

Couple from last night, Hartley could be seen easily with the naked eye using direct vision late in the night after moonset. Only 10 degrees or so from Capella.

(http://i55.tinypic.com/2dtwxts.jpg)

(http://i54.tinypic.com/2eqe2ao.jpg)

I was up late but didn't try the ISS, heavensabove showed it to be very low with a short trail from my location and further from Sirius so I gave it a miss this time  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 16, 2010, 04:14:16 pm
Those are great wide angle shots Martin, Hartley is showing up very well in those now.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 17, 2010, 02:54:30 am
Thanks very much Richard!, got a few tonight as well. Comet looks great.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 17, 2010, 09:33:01 am
Nice captures again guys, was going to try on the way home from work last night but high cloud did away with my chance.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: paulster78 on October 17, 2010, 03:54:37 pm
Great shots again Richard and Martin!
Caught Hartley with the naked eye last night- a lovely sight.

I cranked the iso to 1250, better result i think but a lot of noise there.  Hartley showing up well not far from Capella now.

(http://i613.photobucket.com/albums/tt215/paulster78/Astronomy%20Related/Hart2.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 17, 2010, 04:34:52 pm
Excellent Paul!, well done on that great capture, I see you took full advantage of the dark sky after moonset last night, the higher ISO made a major difference, congrats on the naked eye sighting too  :)

I was up Slieve Gallion last night in misty conds but even so I was amazed to pick up the glow of Hartley even with a bright moon in the sky at ISO800, I saw it without optical aid after moonset too but I was so tired I didn't take images then, now looking at your image I wish I had  :)

(http://i51.tinypic.com/29o518p.jpg)

(http://i52.tinypic.com/2uf7t08.jpg)

(http://i55.tinypic.com/i2ldh4.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 17, 2010, 04:41:11 pm
Thaks Paul and Dave. We've had a big problem with high clouds of late and the encroaching Moon is not helping matters either. I'm not staying up late enough until the Moon sets because of the clouds, I'll take the images when I can get them. Last night was very poor with clouds and Moon but Hartley still shows dimley as it approaches Capella. I see your images posted just before mine Martin, great shots of the sky and City and even getting Hartley in there also. That's beautiful!!

(http://i54.tinypic.com/21cb0gz.jpg)



Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 17, 2010, 04:47:30 pm
Look how close Hartley is to Capella in your image Richard! - that's a beauty!, that's an excellent shot considering the cloud and moonlight, very impressive colours to the stars also  :). Only 3 days to close Earth approach now  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 17, 2010, 04:52:25 pm
Thanks Martin, we're suppose to have clearing over the next several days, I might have to set my alarm and get up after Moonset for photos of Capella and Hartley in dark skies.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on October 17, 2010, 09:31:42 pm
Quote
I might have to set my alarm and get up after Moonset for photos of Capella and Hartley in dark skies.
Good idea - if the sky's clear .... if not, roll over & go back to sleep ....

I got some time on the comet in good transparent skies after moonset last night (Oct 16/17). The comet is still a difficult obhect with the naked eye but is really big & obvious in binoculars.

Here's my image - Canon 40D, 300mm, 31 x 60 sec @ f/2.8, central exposure time around 0200 UT

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/October/17/C103P-101017-0155-300F28-stars.jpg)

Same raw images, processed to allow stars to trail (showing the motion speed), same scale just a bit more aggressive with the curves to show the size of the beast:

(http://i885.photobucket.com/albums/ac55/bjb11213/2010/October/17/C103P-101017-0155-300F28-comet.jpg)

There is a suggestion of a short ion tail pointing to the right and a very broad, extremely diffuse dust tail fading off downwards.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 17, 2010, 09:50:41 pm
Excellent shots all of you!   8)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 18, 2010, 12:29:04 am
This is one of the images taken last night from the top of Bragan Mountain Co.Monaghan (1000ft) and even with the bright moonlight I may have picked up some tail. The comet was clearly visible to the NE once the moon started to drop in altitude. Just a pity we couldn't stay until it set. Apart from the moon the LP up there is nil.
(http://i56.tinypic.com/2l8xb1h.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 18, 2010, 04:52:23 am
That's a great shot John, Hartley really shows up nearing Capella. Looks like a bit of a tail as you say. I'm gearing up for tonight, or should I say early in the morning, I have my alarm set for 3 am after the Moon sets, hope the clouds stay away!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 18, 2010, 03:09:59 pm
These are great images everyone!, nice job catching Hartley in the moonlight John.

Brian, I can see the larger outer green coma on your image - excellent. Just a pity the Moon is spoiling things now, I checked the sky at 05.00 last night during the moonless period but it was too cloudy  :(


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 18, 2010, 05:35:20 pm
I had made a camera holder to strap to our Astrononmy Club's old Meade 10" Relector that I keep and put it to use last and this morning. Did a rough eyeball alignment and plugged in the drive. Not too bad. The two with the Moon still up actually turned out better than the last one after the Moon went down. Great night, not a lot of sleep.


23:34 Local Time 50mm 30 sec f/4 1600 ISO

(http://i53.tinypic.com/rhn4tw.jpg)

02:45 Local Time 50mm 75 sec f/4 1600 ISO

(http://i53.tinypic.com/30iknth.jpg)

03:22 Local Time 50 mm 25 sec f/2.8 1600 ISO

(http://i51.tinypic.com/2hcow08.jpg)



Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 18, 2010, 11:26:06 pm
Lovely images Richard especially the second one, Hartley sticks out like a sore thumb!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Paul on October 19, 2010, 08:42:40 am
Caught this at 0400 this morning - went outside the back door and caught just three frames before the clouds pulled over quicly and the rain started! Usual stack of 50mm RAWs cropped. Bright star is of course Capella.


(http://niphotography.co.uk/images/hartley101019.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 19, 2010, 04:19:50 pm
Beautiful images Richard and Paul, they keep getting better and better!  :)

One from 02.30 this morning, the Moon was low in the SW but still intense yet I could see Hartley with the naked eye so the comet must be very bright indeed considering its large surface area!

(http://i54.tinypic.com/2zsxhuh.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 19, 2010, 04:37:14 pm
Great shots Paul and Martin. I had similar high clouds floating about when I stepped out about 00:15 this morning before turning in. The Moon was shining brightly through the trees just about due south, but I could still see Hartley naked eye. Great little comet that just keeps on giving.

50mm 13 sec f/2.2 1600 ISO

 (http://i53.tinypic.com/2rcx27c.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 19, 2010, 08:10:58 pm
Excellent Richard!, you are really taking advatage of these clear nights, I have been enjoying following this comet too, it has turned out much better than many thought despite it's diffuse nature. Good to practice on until the next great comet comes along.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 19, 2010, 08:15:47 pm
Great images again chaps!  ;)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: paulster78 on October 19, 2010, 08:56:06 pm
Excellent stuff Paul, Martin and Richard.   Another one thrown in for good measure!  02:00 this morning while doing a watch for moonbows.

(http://i613.photobucket.com/albums/tt215/paulster78/Astronomy%20Related/Top4-1.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 20, 2010, 06:20:59 am
Great shot Paul, very similar in appearance to mine. I've had a great time comparing everybodies photos to mine over the past several weeks and the distance that Hartley travels in the 7 hour or so time difference between locations, on the latest photos about 1/2" or so, lol.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on October 20, 2010, 07:25:56 am
Cracking to follow with all these images. Need to get out this evening and get some captures while its at it closest.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 20, 2010, 08:39:52 am
Here is my latest photo of Hartley, definitly getting tougher to see with the Moon nearing full phase. I experimented with different ISO's and such, but ended up getting the best shot with what I normally use. The trees don't grow that way here in Oregon, I tilted the camera to get all of Auriga in the frame. We have two or three big storms heading in off the Pacific so I probably won't see too much more of Hartley for the next week or so, might still get something tomorrow night. It was fun while it lasted.

50mm 13 sec f/2.5 1600 ISO

(http://i55.tinypic.com/264nf2c.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 20, 2010, 04:18:54 pm
Lovely images Paul and Richard, the images are that good that had I not known any better I would have swore these were taken under a dark sky!, Hartley stands out very well, and add to that the Messier open clusters in Auriga and you have a great photo opp. That Moon was very intense last night!. Tonight is closest Earth approach at 11 million miles  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 20, 2010, 11:45:39 pm
Checked this morning to find the moon set at 0515BST so set the alarm for 0500BST. The sky was brilliant, so took a couple of shots. Easily visible to the NE high up due south within Auriga. This sat was a near miss! Some nice meteor activity as well, Orionids?
(http://i54.tinypic.com/2mh7c68.jpg)

(http://i54.tinypic.com/16irtbl.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 21, 2010, 12:27:04 am
That's a great shot with the satellite crossing nearby Hartley. You can really see the Milky Way and Open Clusters in Auriga. I had seen several meteors the past several nights streaming in from the East, most likely Orionids as you say. Late afternoon here and completely fogged in, looks like I can turn in early tonight for once.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on October 21, 2010, 12:38:04 am
Thanks Richard! Pity about the fog, you could always head for the hills again ;)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on October 21, 2010, 04:33:08 pm
Between the fog, a quickly approaching cold front and an extremely bright Moon, I did finally catch one last image of Comet Hartley at 00:08 local time this morning.

50mm 13 sec f/2.8 800 ISO

(http://i51.tinypic.com/x3u69x.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on October 26, 2010, 07:20:21 pm
Anyone got a recent update on the comet?  ::)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on October 26, 2010, 07:24:44 pm
It's now a morning object, and the moon is a huge nuisance. I did just about see it on the morning of the 24th, despite the bright moon, with 10x50 binoculars. Didn't bother looking on the morning of the 25th. Solid cloud + need to sleep this morning. Tonight looks no better & the Moon is closing in on tghe comet's position, worsening prospects despite the moon's waning phase.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on October 27, 2010, 07:32:27 pm
Looks like a slight chance of a meteor shower from Hartley early Nov...

http://science.nasa.gov/science-news/science-at-nasa/2010/27oct_hartleyids/


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on November 01, 2010, 12:19:30 am
Less than ideal conditions but got a shot at Hartley in the early hours this morning while the moon was just about rising. Nice to see that it is still visible this side of full moon. There was quite a lot of very high thin cloud/mist floating across the sky which made it more difficult than it should have been, however still a record.
Taken with the 50mm at f3.2 and 20 secs......I think! That's what loosing an hour does to you!
(http://i52.tinypic.com/usq3m.jpg)

(http://i53.tinypic.com/2nsxuhk.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on November 01, 2010, 02:30:52 pm
Good to see its still visible, Well caught John. Need to get out again.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 01, 2010, 04:00:59 pm
Very nice photos John, I love the whispy high clouds in the photo. Good to see that Hartley is still looking about the same. I thought it would be much dimmer by now, but I guess the magnitude is about the same, just further away. I might have a couple of nights this week to view, will have to wait and see. Thanks!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on November 01, 2010, 04:12:04 pm
Thanks guy's, the only problem now is the fact that you need to wait till the early hours to get it high enough, it's already gone through Gemini and heading down. It will be interesting to see just how long we can follow it before it gets too low. Wish you luck with the weather Richard, it's a horrid day here today :'(


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 01, 2010, 04:20:34 pm
Good to see new Hartley images John! - you have just lit the fuse for this thread again  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 01, 2010, 08:05:59 pm
Just a reminder to be on the alert for possible meteors from comet Hartley over the next couple of nights, the radiant will be in Cygnus.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on November 01, 2010, 11:35:54 pm
So this is what 103P/Hartley looks like! Congrats to John Harmon and team at Arecibo!
http://www.naic.edu/~pradar/103P/


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 02, 2010, 03:12:07 pm
Congrats to the team, that's a stunning radar data set - amazing!!

Saw Hartley easily with the naked eye while storm chasing at the N coast last night, the sky was stunning to say the least and the view in 10x50s was even better, this comet is still putting on a show!. Latest estimates place it at mag +4.5


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 02, 2010, 03:32:44 pm
I wasn't expecting to be running outside at 06:45 this morning until I got up and saw that the stars were still shining brightly even with the crescent moon and an ever brightening eastern sky. I was shocked I could still see Comet Hartley naked eye at this hour. So I ran back into the house, put my favorite 50mm lens on and snapped this view of the comet. She still shows very well as Martin said, but I was so surprised to see it this well in this light. She still has as lot more to give and I'll be out the next several mornings if our weather holds. The comet that keeps on giving!

50 mm  10 sec f/2.8 1600 ISO

(http://i53.tinypic.com/zyagxu.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 02, 2010, 05:30:06 pm
Love the image and report Richard  :), that was an early catch!, you are so correct with what you said ''She still has as lot more to give'' - that is exactly what I was thinking, never a more true sentence spoken, this comet is certainly worthy of our attention during this dark period. I think it's clear that the niffty fifty is the best lens for comet imaging, I need to add one of those to my collection :)

I never got any images of Hartley last night, shame on me for not doing so under that stunning black sky, I was distracted though by blue and purple lightning flashing over the N and NW coast which was truly spetcacular. The crescent Moon was gorgeous too and I've never seen Orion look so fine as I did last night.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on November 03, 2010, 12:44:28 am
Lovely image Richard and good to know it's still NE.

Here's a fascinating read.
http://www.jpl.nasa.gov/news/news.cfm?release=2010-368&cid=release_2010-368&msource=2010368&tr=y&auid=7293009#


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 03, 2010, 04:41:19 pm
Thanks Martin. That must have been an incredible sight seeing the colored lightning display. When you have skies as you discribe, plus lightning on top of that, it's a tough decision on what to put your time to. Hopefully you'll get some more views. Hartley is moving very quick now and hope the weather doesn't interfere with you much.

Thanks John, that was an interesting article regarding Hartley and the visit to JPL to see his comet up close and personal, from other than his livingroom. Next March when we next visit Southern California, we may get a chance to take a behind the scenes tour of JPL. One of my son's high school buddie's Father is a physicist and works at JPL and "might" be able to get us in on other than the regular tour. We'll see if that happens!
Anyway, last night was dark, clear and very warm. Couln't decide on whether to get up early in the morning to check out Hartley or just stay up, so I did both. Hartley rose above the ridgetop about 01:00, a lot earlier than I had thought, so I was in and out of the house until it was visible. Still naked eye but getting a little tougher. I was taking other photos while waiting for Hartley to get into position. I finished up about 02:00 and was up about 06:00 again for one last shot.

50 mm  34 sec f/2.5 ISO 1600 01:26 local time

(http://i52.tinypic.com/2nve0p0.jpg)

50 mm  45 sec f/2.5 ISO 1600 06:22 local time

(http://i52.tinypic.com/2n9bir.jpg)



Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on November 03, 2010, 07:40:06 pm
Great additions Richard!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on November 03, 2010, 09:41:16 pm
Great images Richard and certainly worth waiting up for. I did the same, stayed up for a while when it was clear and then got up later but it was cloudy! My first image also shows the beginnings of the Rosette Nebula to the right of the comet. Richard you have it in the second image! The second was taken over "our hedge" which is in the neighbors garden.
(http://i52.tinypic.com/25jv8sw.jpg)

(http://i53.tinypic.com/2nqe1lc.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 03, 2010, 10:09:55 pm
Two fine photos John. I'm amazed that Hartley shows so good in your somewhat light-polluted skies, you always get good results. I'm lucky to have much darker skies though I do have a lot of marine influence to deal with only living 1000' from the ocean, but at 700' elevation at least. 30 minutes after I took that 2nd photo I was socked in with fog. . Regarding the Rosette Nebula, I noticed that red smudge when I was downsizing the image for email, really didn't think too much about it as I don't know the skies as well as I'd like to. I just went back and checked the original file and it shows quite well in it. I'll have to check for items like that more often. Good luck tonight, we have a front moving in!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: paulster78 on November 03, 2010, 11:23:25 pm
Really great shots Richard and John, i must get out with the fifty again soon to catch Hartley.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on November 04, 2010, 12:35:52 am
Thanks Paul, you would need to do it soon as it's starting to drop fast!


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on November 04, 2010, 03:15:22 pm
WEather has been so frustrating here rain and cloud non stop.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 04, 2010, 04:34:59 pm
What luck, I caught NASA's Deep Impact Epox 1 Satellite at closest approach flyby of Comet Hartley this morning (just kidding), I didn't think I could get that past any of you. This was taken at 06:40 this morning, about 20 minutes ahead of the Epox 1 Satellite, not that I could record it at 11 million miles plus. Just a coincedence that I caught a satellite in the FOV. Comet Hartley is passing to the west Procyon and Gomeisa in Canis Minor. A very wet, misty morning here ahead of rain.

50 mm  10 sec f/1.8 ISO 1600

(http://i53.tinypic.com/2dgonxz.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 04, 2010, 05:12:28 pm
Richard and John - you are doing a fantastic job with the latest images, this becoming an exciting season for comets. Check out the latest Deep Impact image of Hartley's nucleus - wow.

(http://i54.tinypic.com/2vhwygz.jpg)

(http://i56.tinypic.com/2r5q6pl.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on November 04, 2010, 05:51:42 pm
Thanks Martin, you beat me to it, I've just been watching those coming in they are fantastic. Wonder what that strange broad band is? almost looks like two comets stuck together. Amazing detail in those and more to come.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 04, 2010, 07:51:48 pm
Amazing John isn't it, that's got to be the best comet nucleus image we have ever seen, I was always fond of the old Halley nucleus images but this one is something else. No idea what caused that band, it almost lools artifical doesn't it, comets never cease to amaze, just imagine that in the centre of the fuzzy glow of Hartley the next time you observe it through binos - what an experience.  :)

Here's an animation of the latest images...

http://planetary.org/blog/article/00002758/


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on November 04, 2010, 10:48:26 pm
Quote
that's got to be the best comet nucleus image we have ever seen
I'm not going to disagree with you but doesn't this (http://www.jaxa.jp/article/special/hayabusa_sp3/index_e.html) remind you of something?

On the basis of this I think we can be pretty darned sure that asteroid Itokawa is the nucleus of an extinct comet.

Okay, this is speculation, but assume we have a mix of icy material and lumps of rock randomly mixed up & rotating. The denser lumps will tend to migrate away from the spin axis & after some time only icy /dusty material will be left giving the appearance shown by asteroid Itokawa and in a more marked form by the nucleus of Comet Hartley. Further erosion of the central region may eventually lead to centripetal accelleration exceeding the material strength & gravitational cohesion of the object and it will fracture into two pieces as is sometimes seen with comets.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 04, 2010, 11:28:17 pm
Very similar indeed Brian and a fine theory too, just goes to show grey the divison between comets, asteroids, and extinct comets really is - fascinating stuff  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 05, 2010, 05:09:12 pm
The fog was rolling in and out and again it was a very wet, moist and misty sky. I was lucky enough to get this shot of Comet Hartley between fogs just as it rose above the tree-topped ridge to my east. As long as the weathermen continue to hold off on the rain, that's fine with me.


50 mm  10 sec f/1.8 1600 ISO  01:02 Local Time


(http://i53.tinypic.com/2v00ar4.jpg)




Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 05, 2010, 06:24:34 pm
Well done Richard! - thanks for keeping us updated on the comet, lovely image  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Paul on November 06, 2010, 12:07:59 pm
Compared to the new comet, Hartley is still a celestial searchlight! Here's an uncropped stack of 10 x 10secs 50mm f2.5 ISO 1600 taken around 0530 this morning....

(http://niphotography.co.uk/images/hartley101106.jpg)

Paul.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: markt on November 06, 2010, 03:42:40 pm
More brilliant additions! :D


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 06, 2010, 04:16:21 pm
That's a beauty Paul!  :)

One wide angle from last night. Tinypic resize/compression ruins it a bit.

(http://i56.tinypic.com/6xzz0x.jpg)



Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: paulster78 on November 06, 2010, 04:38:11 pm
Excellent shots Richard, Paul and Martin, Hartley certainly still looks good. I was able to catch it easily from the back garden in the early hours although image not worth posting cause of LP-if it clears tonight i will get out to darker skies for a better look!  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 06, 2010, 04:47:35 pm
Great shot Paul, love the interesting background of slurred trees from the stacking and the satellite streaking beneath the pair.
Beautiful wide angle shot Martin. I had forgotten how close Harltley really is to Orion, because of my hills and trees, one or the other is always hiding unless I were to travel to another location. The predicted rains have finally arrived so Hartley will get a rest from my prying eyes for awhile.
Good luck Paul, but any photo is worth posting here. Hope you have good luck if the weather clears.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 08, 2010, 04:21:21 pm
Just about the time I think I won't see Hartley anymore I get another peek. I'll keep posting them until that time comes.

(http://i55.tinypic.com/14kjkph.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 08, 2010, 04:47:36 pm
Nice catch Richard! - your'e not letting this comet escape you at all, I love your dedication for c'hasing' Hartley  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: Big Dipper on November 09, 2010, 12:59:58 am
Nice captures Richard, Paul & Martin. Does anyone here watch the Sky at Night? Last night's programme was devoted to comets with Pete Lawrence imaging it afterwards in Patrick Moore's garden.
Pete also reminded us that around the 28th of November Hartley will glide through the clusters M46 & M47. Here's an image c/o Starry Nights Starry Night showing how they will appear through a 500mm focal length lens.
(http://i848.photobucket.com/albums/ab50/astrochat/Big%20Dipper/hartley2.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: brianb on November 09, 2010, 08:12:20 am
Quote
Does anyone here watch the Sky at Night? Last night's programme
I wait for the extended version on BBC4 - tonight (9th Nov) at 1930 repeated 0230 10th Nov. Sounds like one to make a particular point of not missing though.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: DaveH64 on November 09, 2010, 02:52:54 pm
Still photographing well guys. My car is off the road at the moment, had to happen on days off. :-\


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 09, 2010, 04:28:52 pm
Thanks for the heads up Andy, I watch the show too but missed it last night however I will be adopting Brian's plan tonight, cheers for that.

Hope you get the car back in action soon Dave  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 11, 2010, 04:16:41 pm
Another view of fading Comet Hartley.

50 mm  10 sec f/2 1600 ISO

(http://i56.tinypic.com/9zy4av.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on November 13, 2010, 05:27:08 pm
Comet Hartley still visible though a bit fainter. In the wide shot it's near the center, that's Procyon at top left. There's also a couple of brightish open clusters in there but I haven't checked to see what they are. It still holds it's green color as can be seen from the crop.
(http://i55.tinypic.com/sdmouw.jpg)

(http://i54.tinypic.com/2dmfce1.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 13, 2010, 06:44:18 pm
Nice work Richard and John, good too see the green colour is still evident, Hartley is in quite a great location with so many rich star fields in the Winter MW, keep shooting before the Moon gets too bright. Thanks for the updates.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 14, 2010, 03:49:13 am
Great shots John, nice clear, sharp wide angle. Definitely see the open clusters. We're all but lost in the clouds here until mid week they say, might be it for me.


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 18, 2010, 05:43:00 pm
I had all but forgotten this image of Hartley from the other morning as I didn't have much hope of catching it with the moonlit and cloud-strewn skies, but it still trying to show itself none the less.

50mm  10 sec f2/2 1600 ISO

(http://i55.tinypic.com/rm0fnr.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: martinastro on November 18, 2010, 06:01:54 pm
That's a sneaky catch Richard! - very well done indeed  :)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: John9929 on November 19, 2010, 09:26:01 pm
Becoming nearly impossible now to get this guy on an image with the bright moonlight. This could be my last go at it as it's also getting very low from my back garden. This image is one of a few taken around 03.30UT on November 19th, with the moon still about 20 degrees in the west. The bright star at bottom right is Sirius, so this shows just how low the comet is getting from our lats.
(http://i51.tinypic.com/2ykzv55.jpg)


Title: Re: 103P/Hartley - Naked Eye Comet In October
Post by: rjgjr on November 20, 2010, 09:18:11 pm
Great catch John, I always enjoy the objects in your photos, houses, hedges, antennae, it really gives them a lot of character. Hartley definitely is getting difficult to see, you really have to know where to look.