Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034  ·  The star 24UMa
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M81 and M82 including surrounding area (wider view), 



    
        

            Lee B
M81 and M82 including surrounding area (wider view)
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M81 and M82 including surrounding area (wider view)

Technical card

Imaging telescopes or lenses: Samyang 135 ED UMC F2

Imaging cameras: ZWO ASI533MC Pro

Mounts: Sky-Watcher AZ EQ6 GT Pro

Software: Starkeeper.it Voyager  ·  PixInsight  ·  Aries Productions Astro Pixel Precessor


Dates:Dec. 21, 2020

Frames: 180x60"

Integration: 3.0 hours

Avg. Moon age: 6.93 days

Avg. Moon phase: 45.19%


Basic astrometry details

Astrometry.net job: 4132092

RA center: 9h 55' 24"

DEC center: +69° 24' 3"

Pixel scale: 11.922 arcsec/pixel

Orientation: 129.907 degrees

Field radius: 3.454 degrees


Resolution: 1475x1475

Data source: Backyard

Description

Part 4/6 of first light with my Samyang 135 lens. This image is 180 x 60s with a large variance in quality! It's unusual to see M81 and M82 sit so isolated in an image, but still have so many other things going on around them. Lens was wide open @ F2.

Calibrated and stacked in APP, processed in PixInsight.

Comments

Revisions

  • M81 and M82 including surrounding area (wider view), 



    
        

            Lee B
    Original
  • Final
    M81 and M82 including surrounding area (wider view), 



    
        

            Lee B
    B

Sky plot

Sky plot

Histogram

M81 and M82 including surrounding area (wider view), 



    
        

            Lee B

In these public groups

Samyang 135 f/2