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



    
        

            skyimages
M81
Powered byPixInsight
M81, 



    
        

            skyimages
M81
Powered byPixInsight

Technical card

Imaging telescopes or lenses: Teleskop-Service ONTC 12" f/5.3

Imaging cameras: Atik 383L+ mono

Mounts: ASA DDM60

Focal reducers: ASA 2" x0,73 Corrector/Reducer

Software: PixInsight  ·  DC-3 Dreams ACP  ·  Larry Weber FocusMax  ·  Maxim DL  ·  DC-3 Dreams ACP Scheduler

Filters: H-alpha 12nm  ·  Baader LRGB 2'' Filters


Dates:March 20, 2014

Frames: 226x330"

Integration: 20.7 hours

Avg. Moon age: 18.45 days

Avg. Moon phase: 85.42%


Basic astrometry details

Astrometry.net job: 206984

RA center: 9h 55' 36"

DEC center: +69° 3' 57"

Pixel scale: 0.925 arcsec/pixel

Orientation: 178.825 degrees

Field radius: 0.521 degrees


Resolution: 3240x2436

Locations: Heimsternwarte, Markgrafneusiedl, Austria

Description

M81 captured from February - March 2014. Includes also some luminance images from 2013.
Image processing was done in PixInsight only.

L: 157 x 300s
R: 17 x 400s
G: 18 x 400s
B: 34 x 400s

Binning was 1x1 this time.

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M81, 



    
        

            skyimages