by Emil Ivanov
Technical details:
Optics: 12” ASA Astrograph at F/3.6
Mount: ASA DDM85
Camera: SBIG STL-11000M
Filters: Astronomik LRGB filters
Dates: 2011 Aug. 30th, Sep. 1st
Exposure times: L = 120 min, R = 110 min, G = 100 min, B = 120 min,
Total exp. time: 7,5 hours
Processing: PixInsight and Photoshop CS