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"Ghost of Cassiopeia" nebula (IC-59, IC63)

Igor Chekalin

Taganrog, Russian Federation

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Stationery

Artist's Description

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

desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait

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