Scope   Takahashi Epsilon 160 Reflector at F/3.3 Mount   Losmandy G-11 Gemini Level III on Wood Tripod Camera   SBIG ST2000XM Camera with CFW8 Filter Wheel Filters   Astrodon i-series LRGB Software   MaxIm DL 4, CCDStack, and Photoshop CS Exposure Details L:R:G:B   180:20:20:20minutes Description   NGC 7023, the Iris Nebula, is a beautiful reflection nebula with surrounding dust.