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Contains:  Bode's Galaxy, Cigar Galaxy, M 81, M 82, NGC 3031, NGC 3034
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M81 & M82 LRGB, 


            Michael Caller
M81 & M82 LRGB
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M81 & M82 LRGB

Technical card

Dates:March 23, 2020March 24, 2020

ASI ZWO RGB: 688x60" (gain: 10.00) -20C bin 1x1
ZWO 36mm Luminance Filter: 466x90" (gain: 75.00) -20C bin 1x1

Integration: 23.1 hours

Darks: ~500

Flats: ~1000

Bias: ~1250

Avg. Moon age: 14.41 days

Avg. Moon phase: 0.37%

Bortle Dark-Sky Scale: 6.00

Basic astrometry details job: 3370557

RA center: 9h 56' 6"

DEC center: +69° 19' 51"

Pixel scale: 0.705 arcsec/pixel

Orientation: 272.909 degrees

Field radius: 0.606 degrees

Resolution: 5512x2815

Locations: Backyard, South Croydon, Surrey, United Kingdom

Data source: Backyard



Michael Caller
License: None (All rights reserved)


  • M81 & M82 LRGB, 


            Michael Caller
  • Final
    M81 & M82 LRGB, 


            Michael Caller

Sky plot

Sky plot


M81 & M82 LRGB, 


            Michael Caller