Bright nebulas
Focal Length 1200,0 mm Resolution 1,8″/Pixel (2×2 Binning) CCD ATIK 383L+ @ -20°C Telescope TS ONTC 12″ f/5,3 + ASA Reducer/Corrector 0,73x @ ASA DDM60 Pro Filter Astronomik Halpha 13nm Baader RGB Exposure time Ha:R:G:B 180:120:135:120 mins …. 9.25 hrs total Subs: Ha: 27 x 400s; RGB: 24 x 300s Date 17.Juni – 1.August 2013