Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Kenny on Mar 09, 2015, 23:13:41

Title: Orion startrail
Post by: Kenny on Mar 09, 2015, 23:13:41
Orion startrail from Sevenoaks on evening Saturday 7th March. 27 of 40 x 2 minute exposures (to avoid plane trails) at 200mm, f/5, ISO-400 with Canon EOS 450D DSLR. Combined in Startrails. Levels adjusted and image cropped / resized in Photoshop CS2.

(https://farm8.staticflickr.com/7602/16768183331_ef651d3cbf_o.jpg) (https://flic.kr/p/rxKjHa)
Title: Re: Orion startrail
Post by: MarkS on Mar 10, 2015, 02:35:57
Now that is what I call a perfect star trails image!  Very well done.

Mark
Title: Re: Orion startrail
Post by: Kenny on Mar 10, 2015, 07:33:21
Thanks Mark. Less dotty than my attempts in January now I've got my intervalometer running. I realise retrospectively I could drop the ISO further as in the original shots the foreground looks like it is in daylight and the sky was so bright you lost some of the colour. I darkened the stacked image in Photoshop.
Title: Re: Orion startrail
Post by: Carole on Mar 10, 2015, 09:00:38
Excellent.

Carole
Title: Re: Orion startrail
Post by: The Thing on Mar 10, 2015, 09:41:14
Really good Kenny. I like the stars in daylight effect!
Title: Re: Orion startrail
Post by: Kenny on Mar 10, 2015, 09:50:26
Thanks Carole. Thanks Duncan. I wish I could say that was deliberate! I had to significantly reduce the exposure in Photoshop to get that dark. Lower ISO next one. Incredible how much light a DSLR can gather in 2 minutes.
Title: Re: Orion startrail
Post by: Carole on Mar 10, 2015, 09:53:23
I wouldn't worry about that Kenny, I have done images that are far too bright and had to darken the image.  I did a Moon in about 2011 when it was still dusk and the sky came out blue, but you would not have known by my final image.

Carole
Title: Re: Orion startrail
Post by: JohnP on Mar 10, 2015, 13:21:03
QuoteI did a Moon in about 2011

... Well I'm glad I wasn't there for that..... ;-)
Title: Re: Orion startrail
Post by: Carole on Mar 10, 2015, 13:55:59
QuoteI did a Moon in about 2011

... Well I'm glad I wasn't there for that..... ;-)

:lol: :lol: :lol: :lol: :lol: