Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's nebulae  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034
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M81 & M82, 



    
        

            Pavel (sypai) Syrin
M81 & M82
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Technical card

Imaging telescopes or lenses: SkyWatcher ED80 Black Diamond

Imaging cameras: Nikon D5100

Mounts: Sky-Watcher EQ5 GOTO Nova

Guiding telescopes or lenses: Finder 8x50

Guiding cameras: QHY5


Dates:April 14, 2013

Frames:
20x120" (40') ISO1600 bin 1x1
11x240" (44') ISO1600 bin 1x1

Integration: 1h 24'

Flats: ~7

Bias: ~11

Avg. Moon age: 3.80 days

Avg. Moon phase: 15.46%

Bortle Dark-Sky Scale: 4.00


Basic astrometry details

Astrometry.net job: 169804

RA center: 9h 54' 49"

DEC center: +69° 25' 4"

Pixel scale: 4.077 arcsec/pixel

Orientation: -80.513 degrees

Field radius: 1.341 degrees


Resolution: 620x407

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M81 & M82, 



    
        

            Pavel (sypai) Syrin