Deep Sky Photography with digital cameras

CCD Astrophotography by Jürgen Stein

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M51 (Whirlpool Galaxy)

M51 (Whirlpool Galaxy)

Image orientation: North is on the left side.

Exposure Data:

Telescope: Newtonian 250mm @ f/4.8 on Losmandy G11 mount.
Camera: SBIG ST 2000 @ -15°C.
Exposure: LRGB with R = R + Hα. L - 55x600s, Hα - 16x600s, R - 15x600s, G - 12x600s, B - 12x600s. No binning. Total exposure time 18h20m.
Location: Rhein-Main area, Germany.
Processing: Pixinsight