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



    
        

            stevebryson
M81
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M81

M81, 



    
        

            stevebryson
M81
Powered byPixInsight

M81

Technical card

Imaging telescopes or lenses: Astro-Tech AT10RCCF

Imaging cameras: SBIG ST-8300C

Mounts: Orion Atlas EQ-G

Guiding telescopes or lenses: Astro-Tech AT10RCCF

Guiding cameras: The Imaging Source DMK 21AF04

Software: photoshop  ·  PixInsight  ·  Nebulosity  ·  Microprojects Equinox Image

Filters: Orion SkyGlow 2" Imaging Filter

Accessory: Orion Deluxe off-axis guider


Dates:March 12, 2013

Frames: 30x900" (7h 30')

Integration: 7h 30'

Avg. Moon age: 0.68 days

Avg. Moon phase: 0.52%


Basic astrometry details

Astrometry.net job: 89009

RA center: 9h 55' 36"

DEC center: +69° 4' 33"

Pixel scale: 1.578 arcsec/pixel

Orientation: 92.958 degrees

Field radius: 0.322 degrees


Resolution: 1173x886

Locations: Home, San Rafael, California, United States

Data source: Backyard

Comments

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Histogram

M81, 



    
        

            stevebryson