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Contains:  NGC 7317, NGC 7318, NGC 7319, NGC 7320, NGC 7331, NGC 7335, NGC 7337, NGC7317, NGC7318, NGC7319, NGC7320, NGC7331, NGC7333, NGC7335, NGC7336, NGC7337, NGC7338, NGC7340, Stephan's Quintet
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NGC 7331 and Stephan's Quintet, 


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NGC 7331 and Stephan's Quintet

Technical card

Imaging telescopes or lenses:Skywatcher Explorer 200PDS

Imaging cameras:QHYCCD QHY9M

Mounts:Skywatcher NEQ6 PRO Synscan

Guiding telescopes or lenses:Skywatcher 9x50 finderscope

Guiding cameras:QHYCCD QHY5L-IIc

Focal reducers:Baader MPCC Mk III


Filters:Baader Blue 2"Baader Red 2"Baader Green 2"Baader L 2''

Accessory:QHYCCD QHY 2" Filter wheelSeletek Armadillo

Dates:Sept. 3, 2017

Baader Blue 2": 22x180" -20C bin 1x1
Baader Green 2": 22x180" -20C bin 1x1
Baader L 2'': 45x180" -20C bin 1x1
Baader Red 2": 22x180" -20C bin 1x1

Integration: 5.6 hours

Flats: ~10

Bias: ~50

Avg. Moon age: 12.05 days

Avg. Moon phase: 91.87% job: 1716901

RA center: 22h 36' 8"

DEC center: +34° 10' 6"

Pixel scale: 1.105 arcsec/pixel

Orientation: -104.389 degrees

Field radius: 0.615 degrees

Resolution: 3246x2341

Locations: Puolivälinkangas - Oulu, Oulu, Finland

Data source: Backyard


This was a real struggle with the colors, hard to get anything sensible out of this. Probably too short exposures.



License: None (All rights reserved)

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NGC 7331 and Stephan's Quintet,