Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's nebulae  ·  M 81  ·  NGC 3031
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            Christopher Maier
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Technical card

Imaging telescopes or lenses: Astro-Physics 130EDFGT

Imaging cameras: SBIG STT 8300M

Mounts: Astro-Physics Mach1AP GTO with GTOCP3

Guiding telescopes or lenses: Astro-Physics 130EDFGT

Guiding cameras: SBIG STT 8300M

Software: PixInsight 1.8 Processing  ·  The SkyX Pro Camera/Telescope software

Filters: Astrodon Series 2 LRGB  ·  SII 3nm  ·  Astrodon Ha 3nm TruColor

Accessory: FLI Atlas focuser  ·  SBIG AO-8T Adaptive Optics

Dates:Feb. 18, 2016

Frames: 90x300"

Integration: 7.5 hours

Avg. Moon age: 10.65 days

Avg. Moon phase: 82.04%

Basic astrometry details

Astrometry.net job: 1003248

RA center: 9h 55' 34"

DEC center: +69° 3' 28"

Pixel scale: 1.349 arcsec/pixel

Orientation: 9.972 degrees

Field radius: 0.519 degrees

Resolution: 2028x1884

Locations: Maier Observatory, San Antonio , Texas, United States

Data source: Backyard


M81 LRGB about 8 hrs total


Sky plot

Sky plot




            Christopher Maier