Hi All, maanaged to get out for a bit laast night, and did aa little experimentation with sub length. I wanted to see how long I could push my subs and still get a usable image, I tried for 4 minutes but those exposures ended up bringing in too many gradients. So at the very end of the session I just fired off what i could at 2 minutes, which i already know is ok on a clear night. Unfortunately this meant that I could only get 50 minutes on the subject since i'd already spent most of my time on the 4 minute subs.
Anyway, I was quite happy with how they came out anyway, just kicking myself I didn't use the whole night to image it.
Here it is, I've included a closeup at 50% res aswell to show details.
(http://farm3.static.flickr.com/2558/3840145933_79f64d6376_o.jpg)
(http://farm3.static.flickr.com/2488/3840145959_1398817be0_o.jpg)
Daniel
:O)
Very good image at a nice scale. With more subs this would be spectacular. I'm hoping to do a small part of the NA Neb myself tonight at DSC.
I'm unsure what you mean by gradients. How can a 4min image have gradients but not a 2min image?
Mark