Astronomy, Photography and Weather

General Category => Weather & Atmospherics => Topic started by: jgs001 on April 29, 2009, 11:51:11 pm



Title: A bit of Halo
Post by: jgs001 on April 29, 2009, 11:51:11 pm
Not sure quite what this is called, I suspect it's not got a specific name, and is just part of the Halo, any thoughts ? I saw this as the sun was going down. It was in a line vertically above the sun at about the 22˚ line

(http://i246.photobucket.com/albums/gg118/johns_bucketofphotos/astro/Atmospherics/IMG_5134.jpg)

And with a plane

(http://i246.photobucket.com/albums/gg118/johns_bucketofphotos/astro/Atmospherics/IMG_5133.jpg)

The sun was hiding behind a low bushy tree


Title: Re: A bit of Halo
Post by: martinastro on April 29, 2009, 11:58:20 pm
Well spotted John!. If it was 22 degrees above the Sun then it was probably an Upper Tangent Arc (UTA).


Title: Re: A bit of Halo
Post by: Big Dipper on April 30, 2009, 12:49:36 am
Nice work John.


Title: Re: A bit of Halo
Post by: John9929 on April 30, 2009, 01:48:07 am
Nice UTA there John, some lovely colour there.


Title: Re: A bit of Halo
Post by: jgs001 on April 30, 2009, 08:07:12 am
Thanks guys, and thanks for the ID.


Title: Re: A bit of Halo
Post by: rjgjr on May 06, 2009, 03:38:03 pm
Still trying to get back through the forum after my absence, looking at John's very interesting images of a UTA. I saw something like that about a month ago, but it was horizontal with the sun at sunset. Would that be considered the same thing or is it a sundog? As you can tell, I don't know much about them!!

(http://i43.tinypic.com/ruxquh.jpg)


Title: Re: A bit of Halo
Post by: jgs001 on May 06, 2009, 03:42:21 pm
Nice capture Richard. I'm pretty sure that Horizontally makes it a sundog, but I'm sure the others will confirm that.


Title: Re: A bit of Halo
Post by: martinastro on May 06, 2009, 04:01:25 pm
Nice image Richard...classic Sundog  :)


Title: Re: A bit of Halo
Post by: Steveo74 on May 07, 2009, 09:25:21 am
Nice captures John & Richard...  :D


Title: Re: A bit of Halo
Post by: Roman White on May 07, 2009, 07:33:18 pm
Nice image, Richard. It is a right sundog, not too bright though (maybe there was also a left one).


Title: Re: A bit of Halo
Post by: rjgjr on May 08, 2009, 03:53:39 am
Could very well have been a left sundog, but from my vantage point it was impossible to see.