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Contains:  NGC 3077, M 82, NGC 3034, M 81, Bode's nebulae, NGC 3031, NGC 2976, The star 24UMa
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M81 group, 


            Scotty Bishop
M81 group

M81 group

Technical card

Resolution: 7376x4932

Dates:Feb. 12, 2018

Frames:Optolong UHC 2": 54x120" ISO3200

Integration: 1.8 hours

Flats: ~10

Bias: ~200

Avg. Moon age: 26.46 days

Avg. Moon phase: 10.28%

Bortle Dark-Sky Scale: 4.00

Temperature: -5.00 job: 1927931

RA center: 148.282 degrees

DEC center: 68.811 degrees

Pixel scale: 2.377 arcsec/pixel

Orientation: 98.350 degrees

Field radius: 2.930 degrees


I decided to do a more wide field shot of the M81 and M82 area last night, but I forgot to take my CLS filter off that I use to suppress stars and bring out nebulae. Oops! Still, with what I used I suppose it isn't too terribly bad. Did about 5 minutes of processing on it.



Scotty Bishop
License: None (All rights reserved)

Sky plot

Sky plot


M81 group, 


            Scotty Bishop

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