M81 Galaxy

Object: m81
Object type: Galaxy
Captured: 2026-02-09
Equipment: Celestron 11 Edge HD + Fast Star · Skywatcher EQ6-R-Pro · ZWO 1600MM · ZWO EFW · RGB
Telescope: Celestron 11 Edge HD + Fast Star
Mount: Skywatcher EQ6-R-Pro
Camera: ZWO 1600MM
Filter wheel: ZWO EFW
Filter set: RGB
Scope type: SCT
Exposure: 1
Processing: 1, PixInsight

Image license: This gallery image is published under a Creative Commons license.

Wikipedia reference

Messier 81

Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiral galaxy about 12 million light-years away in the constellation Ursa Major. It has a D25 isophotal diameter of 29.44 kiloparsecs (96,000 light-years).

Constellation: Ursa Major
Distance: 11.99 ± 0.16 Mly (3.675 ± 0.049 Mpc)
Apparent magnitude (V): 6.94
Type: SA(s)ab, LINER
Size: 29.44 kiloparsecs (96,000 light-years)(diameter; 25.0 mag/arcsec B-band isophote)
Apparent size (V): 26.9′ × 14.1′