Heres a shot my Wife and I did the other night. Canon 10D (ancient!) with a basic 28-55mm lens, F5.6, 100 iso 1/2 hour shot.
Focus is tricky because infinity is not the setting you use.
Turned out kinda cool! Polaris (north star is bright one just about in the middle)
Lots of great dark skies here in Baja so light pollution is not a big issueN2Baja - 5-19-2012 at 12:53 PM
Wow, thats awesomeBigOly - 5-19-2012 at 04:22 PM
Good stuff! Thanks for the info/links. Olyastrobaja - 5-19-2012 at 04:55 PM
thanks! The key is to shoot an exposure of equal time in the same ambient temp with the lens cap on. This gives you a dark frame and it gets
subtracted from the original to take all the digital noise outKen Cooke - 5-19-2012 at 05:39 PM
Quote:
Originally posted by astrobaja
thanks! The key is to shoot an exposure of equal time in the same ambient temp with the lens cap on. This gives you a dark frame and it gets
subtracted from the original to take all the digital noise out
I never knew any of this. Thank you for taking the time to explain it to us!David K - 5-20-2012 at 09:09 AM
So should we worry when Polaris no longer is a dot, but becomes a blur in these photos pointed at true north?
That is when climate will really change!CortezBlue - 5-20-2012 at 06:53 PM
Good article.
I haven't done a star trail for several years and there is an old abandon house near my home that I want to shoot the star trail from inside looking
out and dome some internal illumination using a flash or flashlight.
I shoot Nikon and use an intervalometer to take the photos automatically. Maybe during memorial day weekend.
[Edited on 5-21-2012 by CortezBlue]astrobaja - 5-24-2012 at 04:44 PM
Cortezblue: some amateur astronomers told me about this free software that stacks and subtracts darks for you, much easier!
