Time for another beginner's question
Yesterday I've got out with my dob to a Bortle 3 spot (almost Bortle 2). The sky was fully clear, the moon was down as well and at 3% Waxing Crescent, I've been at the spot from 8 pm to 2 am, but the sky was so bright for some reason. It seemed like the full moon will popup on every cardinal direction. It was bright on the edges like 50% 50%, and at the top was like 25% blue and 75% dark.
Why is that, what is the fourth ingredient I need to consider? I was observing on the same spot during July, and there were some moments the sky was amazingly dark (I remember how impressed I was when the first time I saw M22 in a dark sky).
Clear and dark skies
EDIT: Location is Europe, Serbia, Latitude at 45° N
Edited by krokodilce, 20 September 2020 - 05:09 AM.