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NGC 7331

NGC 7331

Date: 01.10.2011 and 02.10.2011
Ambient conditions: 5°C, transparency 4/5, seeing 3/5
Location: Trier, Germany

Telescope: Deltagraph 300mm f/3.3
Mount: GM2000QCI
Camera: SXVF-M25C
Guiding scope: Orion short tube 80mm f/5
Guiding camera: ATIK 16IC
Filters: IDAS LPS

Software: Maxim DL 5
FOV, Image scale: 62.5 x 54.8 arcmin, 1.62 arcs/pixel
Sub-exposures: 4 h 50 m (29 x 10 min) light frames
Calibration: 52 x 15 s EL Flats, Masterbias 

Maxim DL 5: Calibration, SDMask stacking
CS5: Curves & Levels, Carboni´s Actions, Unsharp mask on galaxies.

Picture taken during two consecutive nights with average transparency and seeing. Huge number of neighboring galaxies, including the famous group Stephan's quintet on the right bottom corner.

Download full size image:

Filename: galaxies/ngc7331_2011-10-01_full.png
Filesize: 6586552 Kb
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