Quote:
Originally Posted by batema
Terry, If you take them over a number of nights would you have to take them when the object is at the same elevation the following evenings???
|
No, but the seeing is poorer closer to the horizon. Also stars appear to get redder as you get closer to the horizon. This is called "extinction" but I don't think that it would make much difference if you are just taking pretty pics. It is very important if you are measuring the magnitude (photometry)of stars.