Deep Sky Photography with digital cameras

CCD Astrophotography by Jürgen Stein

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M81

M81

Image orientation: North is on top.

Date:22.04.2011
Telescope: Vixen VC200L @ f/6.4 on G11 mount
Camera: SBIG ST-2000XM (KAI2020) @ -15°C.
Exposure: LRGB with R = R+Hα. L - 11x300s, Hα - 4x300s, R - 3x300s, G - 3x300s, B - 2x300s + 3x120s. L not binned, RGB and Hα 2x2 binned.
Location: Rhein-Main area, Germany.