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Robert Chozick | all galleries >> Galleries >> Deep Sky Images > M81 and M82 Galaxies in Ursa Major
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17-Jul-2024

M81 and M82 Galaxies in Ursa Major

Paducah Skies Observatory

I removed a slice of the sky between the galaxies to bring them closer to look better on a print.

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

Messier 82 (also known as NGC 3034, Cigar Galaxy or M82) is the prototype nearby starburst galaxy about 12 million light-years away in the constellation Ursa Major. The starburst galaxy is five times as bright as the whole Milky Way and one hundred times as bright as our galaxy's center. In 2005, the Hubble Space Telescope revealed 197 young massive clusters in the starburst core. Throughout the galaxy's center, young stars are being born 10 times faster than they are inside our entire Milky Way Galaxy.

Paducah Skies Observatory is a private observatory SW of Paducah, TX. It sits on 45 acres of native Texas grasslands and mesquite trees. The skies are 21.99 on the light pollution scale (almost Bortle 1).

AG Optical 10 inch iDK
ZWO ASI6200MM Pro Full Frame CMOS camera
Baader Vario Finder mounted as Guidescope
ZWO ASI178MM Guide Camara
Astro Physics 900 GTO mount

Ha 10 min 18 exp (150 gain/40 offset)
R/G/B 5 min 17 exp each (100 gain/30 offset)
Luminance from 1x1 RGB

Guided with PHD 2
Captured with The SkyX
Pre-processed and Stacked in Siril
Processed in PixInsight and Photoshop full exif


other sizes: small medium large original auto