Hi guys,
Got a strange question for you all.
About 5 years ago I moved to melton and quickly noticed how dark the sky is compaired to outer melbourne. I enjoyed many dark nights with my 10x50 binos looking at DSO and comets. After a few lazy years (kids and fishing came), this year I got my self some 20x80 bios and hopped back into star gazing.
The last few night I have noticed that the sky is not as black as I remebered

.
What would be the cause of this?
1. More houses? (I hope not)
2. I was out to early? (stargazing at 10pm)
3. Just the atmosphere?
4. Summer nights arent as dark as winter ones?
Some answers would be appreciated befor I jump in and buy a 10" Dob.
Many Thanks Anthony