I live in an area Southeast of Phoenix, far enough away to have some darker skies over my head in my backyard. My neighborhood has very few street lights, and the ones that are installed are of the light pollution conscious variety pointing straight down, but the garage lights from neighbors homes are a problem for viewing. So after considering many different options...I cam up with a solution I wanted to share incase someone else has the same dellema.
I got a portable gazebo from Walmart, (the kind that can stand up independantly). It's a 9X9 for only $54.00. I setup the frame, and drape black shower curtains over the top of the walls. I have included a photo for you here. I works perfectly for keeping me in the dark!
You can go here for the photo http://roadrunnerband.shutterfly.com/27