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.
Messier 81 is the largest galaxy in the M81 Group, a group of 34 in the constellation Ursa Major. At approximately 11.7 Mly (3.6 Mpc) from the Earth, it makes this group and the Local Group, containing the Milky Way, relative neighbors in the Virgo Supercluster.
Gravitational interactions of M81 with M82 and NGC 3077 have stripped hydrogen gas away from all three galaxies, forming gaseous filamentary structures in the group. Moreover, these interactions have allowed interstellar gas to fall into the centers of M82 and NGC 3077, leading to vigorous star formation or starburst activity there.
| Object | M81 Bode's Galaxy |
| Constellation: | Ursa Major |
| Position: | RA 09h 55m 24s Dec +69° 04' 03'' |
| Apparent Size: | 25 × 11,5 arcmins |
| Apparent Magnitude: | 7.0 |
| Distance in light years: | 1.8 Mly |
| Photo Data | |
| Date: | 02 Feb - 08 Mar 2022 |
| Location: |
Rancho Hidalgo Observatory, New Mexico U.S.A. (1400m ASL) GPS: 31.9469444 N / -108.898333333 E |
| Telescope: | T-17: Planewave CDK17 43cm, f/d 6.8/2940mm |
| Camera: | FLI PL16803 9μm, 4096x4096px, @ T sensor = -25°C |
| Field of View: | arcmins |
| Pixel Scale/Resolution: | arcsec/px |
| Expose frames/times: | L 27x1200s, R 16x900s, G 16x900s, B 16x900s |
| Total expose: | 21h 0min |
| Filter: | Astrodon Luminance, Red, Green, Blue |
| Mount: | Paramount ME |
| Software: | Siril 1.4, Photoshop CC |
| Remarks: |
© Photos by Peter Cerveny
© Object description/intro text fully or partially by Wikipedia,
which is released under the Creative Commons Attribution-ShareAlike 4.0 International License