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



    
        

            Frédéric Tapissier
M81
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Technical card

Imaging telescopes or lenses: Skyvision Ritchey-Chrétien 10"

Imaging cameras: SIGMA-83 KAF 8300

Mounts: EQ8

Guiding telescopes or lenses: Skyvision Ritchey-Chrétien 10"

Guiding cameras: Lodestar

Software: PixInsight  ·  photoshop  ·  Maxim DL

Accessory: Starlight Xpress SXV-AO


Dates:Feb. 2, 2014

Frames: 70x200" (3h 53' 20") -20C bin 2x2

Integration: 3h 53' 20"

Darks: 21

Bias: 21

Avg. Moon age: 2.96 days

Avg. Moon phase: 9.62%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 20.10

Temperature: 0.20


Basic astrometry details

Astrometry.net job: 174234

RA center: 09h55m52s.1

DEC center: +69°0346

Pixel scale: 1.087 arcsec/pixel

Orientation: -89.321 degrees

Field radius: 0.267 degrees


Resolution: 620x715

Locations: Longuesse ( SQM 20.09 ), Longuesse, Val d'oise, France

Description

M81's Galaxy

Shoot from my little village in Parsian suburb

Comments

Revisions

  • M81, 



    
        

            Frédéric Tapissier
    Original
  • Final
    M81, 



    
        

            Frédéric Tapissier
    E

Sky plot

Sky plot

Histogram

M81, 



    
        

            Frédéric Tapissier

In these public groups

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