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crescent moon tonight

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Author Topic: crescent moon tonight  (Read 860 times)
jjb
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« on: January 28, 2009, 08:36:44 pm »

Took some images tonight sky was in good shape but it quickly turned bad.









jonathan.
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Paul
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« Reply #1 on: January 28, 2009, 08:50:05 pm »

Nice work Jonathan - I reckon you have Uranus in #2, and a nice Steering Wheel just above right of the Moon too. Amazing how the sky looked promising then turned so bad after the last of twilight went wasn't it?
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jjb
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« Reply #2 on: January 28, 2009, 09:05:21 pm »

If you had seen *3/4 before i took the red out there is no way you would set the scope up sky is too full of moisture.
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Tyler
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« Reply #3 on: January 28, 2009, 09:37:09 pm »

great shots here Johnathan. I saw it last night too and it looked great!
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John9929
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« Reply #4 on: January 28, 2009, 10:13:41 pm »

Nice images Jonathan, was that first one taken with the 70-300 lens? Uranus is clearly visible in No 2.
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« Reply #5 on: January 28, 2009, 10:53:47 pm »

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Amazing how the sky looked promising then turned so bad after the last of twilight went wasn't it?
Hmmm, I got a bit better than that - some bits of sky reasonably transparent until about 2100 when it all filled in very suddenly, leaving just the brightest stars visible through the (cirrostratus) murk.
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martinastro
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« Reply #6 on: January 28, 2009, 11:07:45 pm »

Nice work Jonathan. Very interesting images. I like number 2 because of its dramatic nature. The plane looks  fantastic in the R. Nicely done.  Smiley

The twilight here was fantastic. The crescent Moon was gorgeous against such a pure clear blue sky. Took several images when it was over the trees. First is 300mm and the 2nd a bit closer.



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jjb
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« Reply #7 on: January 28, 2009, 11:37:00 pm »

John all shots where with the 18-135mm lens the 300mm was at home,Martin i had only a few seconds to grap the shot with the plane in it an easy jet
as well coming home from work! your image of the moon is very nice you are doing a good job with your camera,tyler and paul thanks for the comments folks.

jonathan.
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martinastro
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« Reply #8 on: January 29, 2009, 12:46:36 am »

John9929 asked me to post these images on his behalf because his internet is down. These are single images taken with a Sigma 70-300mm lens which a forum member kindly bought him. 1st image is ISO800, F/5.6 at 0.5 sec's. 2nd image is the same except at 3.2 sec's. John said ''more experiments needed and that this is 2nd light for this lens''.



« Last Edit: January 29, 2009, 12:48:18 am by martinastro » Report Spam   Logged

rjgjr
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« Reply #9 on: January 29, 2009, 03:39:59 am »

Excellent images by one and all, breathtaking!!
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jgs001
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« Reply #10 on: January 29, 2009, 09:57:44 am »

Excellent images everyone.
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John9929
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« Reply #11 on: January 29, 2009, 03:46:36 pm »

Thanks Martin for putting up the images, Virgin appears to have been doing some work hence the "downtime".

The images turned out pleasing as all I was after was "some earthshine", and I got more than expected. Some more time is needed to experiment as with a 300mm lens even 3 secs brings up some movement, that I will need to get my head round.

Thanks Richard & John for the comments, and to the very generous person who bought me the lens!
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Paul
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« Reply #12 on: January 29, 2009, 04:41:12 pm »

Hey John, nice shots!

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300mm lens even 3 secs brings up some movement, that I will need to get my head round

Yep, as I said in my talk, you can get away with 10secs with a 50mm lens and proportionally less for longer lenses, so for 300mm you can use shutter speeds up to 50/300 x 10 sec which is 1.67 seconds, and of course the Moon is equatorial so is the worst case. I wouldn't expect to get a sharp image at much over a second with that lens.
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brianb
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« Reply #13 on: January 29, 2009, 07:53:51 pm »

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I wouldn't expect to get a sharp image at much over a second with that lens.
Yes ... I've "got away with" 1 sec on a static tripod with a 400mm lens but any more than that is definitely compromising the image, motion blur becomes apparent.

OTOH you need at least 1 sec at f/4, ISO 400 to record earthshine well, so the only real way is either to use a fast lens or a high ISO rating....
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jjb
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« Reply #14 on: January 29, 2009, 08:47:53 pm »

Would putting it on a drive work or does the different focal lengths need different settings thought i would ask as i don't know.

jonathan.
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