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Contains:  M 81, Bode's nebulae, NGC 3031
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M 81, 





    
        

            Dave59
M 81

M 81

Technical card

Resolution: 4320x3104

Dates:Dec. 9, 2018

Frames:
ZWO BLUE: 125x60" -20C
ZWO GREEN: 125x60" -20C
ZWO LUM: 400x60" -20C
ZWO RED: 125x60" -20C

Integration: 12.9 hours

Darks: ~25

Flat darks: ~25

Avg. Moon age: 2.04 days

Avg. Moon phase: 4.63%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 2444150

RA center: 9h 55' 23"

DEC center: +69° 1' 19"

Pixel scale: 0.914 arcsec/pixel

Orientation: 29.850 degrees

Field radius: 0.675

Locations: Backyard Roll Off Roof Observatory, Walnut, Illinois, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Comments

Author

Dave59
Dave59
License: None (All rights reserved)
1931
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M 81, 





    
        

            Dave59