NGC 7331 and Stephan's Quintett

NGC 7331 and Stephan's Quintett

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Date/Site: August 31., 2008, AAR-observatory in Presberg
Exposure/
Filter:
L: 6 x 10 minutes
RGB: 3 x 5 minutes, 2x2 Binning (-15°)
Camera: SBIG ST10XME, motorized Atik-filterwheel with Astronomik-RGB-filters
Optics/
Instrument:
6"-Newton on the Gemini 41 Observatory mount, Baader coma-corrector
focusing by hand with the aid of MaximDL 4.6
Deblooming, darks, alignment and stacking: MaximDL,
levels and curves: Photoshop CS



Remarks: first LRGB with the new ST10; the reflector wasn't properly collimated, I promise to take care next time.

© Friedhelm Hübner, last revision:  16.01.2017