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Robert Chozick | all galleries >> Galleries >> Deep Sky Images > M 81 Galaxy in Ursa Major
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M 81 Galaxy in Ursa Major

Fort Griffin, TX

Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a spiral galaxy about 12 million light-years away in the constellation Ursa Major. M81 is one of the most striking examples of a grand design spiral galaxy, with near perfect arms spiraling into the very center. Because of its proximity to Earth, its large size, and its active galactic nucleus (which harbors a supermassive black hole) Messier 81 is a popular galaxy to study in professional astronomy research

Astro-Tech AT8RC Carbon Fiber Ritchey-Chretien
Astro-Tech Field Flattener
ZWO ASI294MC Pro CMOS One Shot Color Camera
Baader Vario Finder mounted as Guidescope
ZWO ASI178MM Guide Camara
Astro Physics 900 GTO mount

40 exposures 5 minutes (120 gain/20 offset) each
10 exposures 1 min (120 gain/20 offset) each (for core only)

Guided with PHD-2
Captured Pre-processed and Stacked in Nebulosity 4
Post Processed in Pixinsight and Photoshop full exif

other sizes: small medium large original auto