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Contains:  NGC 7337, NGC 7335, NGC 7331, NGC 7320, NGC 7319, NGC 7318, Stephan's Quintet, NGC 7317
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NGC 7331 & Stephan's Quintet, 


            Richard Kelley
NGC 7331 & Stephan's Quintet

NGC 7331 & Stephan's Quintet

Technical card

Resolution: 5425x3624

Dates:Sept. 8, 2019

Frames:IDAS NGS1: 103x120" (gain: 270.00) bin 1x1

Integration: 3.4 hours

Darks: ~20

Avg. Moon age: 9.64 days

Avg. Moon phase: 73.06%

Bortle Dark-Sky Scale: 7.00

Temperature: 17.00 job: 2917707

RA center: 22h 36' 29"

DEC center: +34° 11' 45"

Pixel scale: 0.491 arcsec/pixel

Orientation: 269.856 degrees

Field radius: 0.445

Locations: Field, Glenn Dale, MD, United States

Data source: Traveller


After getting all set up, the clouds rolled in at 10:00PM. I waited it out for an hour and then the clouds became intermittent. I managed to get a few hours worth of images, but it was also very hazy. The LP filter was crucial here, as well as the amazing capabilities of PixInsight. I also realized that I should put a LP filter (Optolong L-Pro) on my guiding camera. Wow, this made a huge difference. More stars and higher contrast for guiding!



Richard Kelley
License: None (All rights reserved)

Sky plot

Sky plot


NGC 7331 & Stephan's Quintet, 


            Richard Kelley