Crab Nebula (M1) Previous | 16 / 58 | Next Download | Views: 2014 Crab Nebula (M1) Exposure time: L=2x20 min., R=20 mins., G=20 mins B=35 mins. C11 @ f/10, MX916 CCD Camera Image Photographic Power: 55x Imaged By: Jeff Thrush Previous | 16 / 58 | Next