Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's nebulae  ·  M 81  ·  NGC 3031
M81, 



    
        

            Vandewattyne
M81
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M81

M81, 



    
        

            Vandewattyne
M81
Powered byPixInsight

M81

Technical card

Imaging telescopes or lenses: CFF Telescopes Newton 200 F5

Imaging cameras: ZWO ASI 1600MM Cooled Pro

Mounts: Avalon Instruments Avalon Linear Fast Reverse

Filters: Astronomik Deep Sky LRGB filter set


Dates:Feb. 22, 2019

Frames:
320x60"
Astronomik Deep Sky LRGB filter set: 180x90"
Astronomik H alpha 6nm 1.25": 90x120"

Integration: 12.8 hours

Avg. Moon age: 18.03 days

Avg. Moon phase: 88.42%


Basic astrometry details

Astrometry.net job: 2649229

RA center: 9h 55' 36"

DEC center: +69° 3' 57"

Pixel scale: 0.775 arcsec/pixel

Orientation: 274.836 degrees

Field radius: 0.567 degrees


Resolution: 4381x2921

Data source: Backyard

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M81, 



    
        

            Vandewattyne