Friday, April 21, 2017

Backyard Astrophotography -- The Big Dipper

Been pointing my camera skyward at night of late.  There's a lot to it, but I'm sort of starting to get the hang of it.  Here is a series of 3 pictures of the Big Dipper with everything on the camera set the same except exposure time.  I like that you can go from a bunch of dots to what are more or less just the principal stars in the constellation (something you'll see much more clearly if you click on the images to get larger versions).


A 30s exposure


A 20s exposure

A 10s exposure

I should note that these are raw images.  Far clearer images can be obtained with stacking.  From what I understand, that's particularly useful when there is lots of detail in the subject (nebulae, close-ups of planets, etc).