20190116_05-57-51_B33_50x120s_h-alpha_D7000a_more_darks_red_channel4_2048px Published 16/01/2019 at 2048 × 1354 in The Horsehead nebula (again) B33, The Horsehead Nebula, 50x120s – 1h40m, ISO1600, Nikon D7000a, 80mm f/7 ED-Refractor, 0,78x Reducer, Baader 2″ H-alpha Filter 35nm