Canon 350Da (baader IR-cut filter mod)
NPZ TAL-250K (Klevtsov’s system) telescope (10", 1:8.5, 1:6 with special NPZ 0.7x reducer-flattener MkII).
EQ6 PRO Syn Scan mount, guided with 75mm refractor and QHY-6 ccd.
My balcony, city center (visually 3.5-4.0m sky)
17 hours H-Alpha (by 20 min subs @ iso800)
6 hours RGB (5min, iso800)
40×2min RGB for ha-contunum substraction.
Channels composing formula – [ (R+(Ha-Ha_continum)), G, B ]
Software: Iris, FIT’s Stacker Photoshop.
Many nights in June-July, 2010