Bode's Galaxy & Friends
M81 & M82
M81 (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). Because of its relative proximity to the Milky Way galaxy, large size, and active galactic nucleus (which harbors a supermassive black hole), Messier 81 has been studied extensively by professional astronomers. The galaxy's large size and relatively high brightness also makes it a popular target for amateur astronomers. In late February 2022, astronomers reported that M81 may be the source of FRB 20200120E, a repeating fast radio burst.

Messier 82 (also known as NGC 3034, Cigar Galaxy or M82) is a starburst galaxy approximately 12 million light-years away in the constellation Ursa Major. It is the second-largest member of the M81 Group, with the D25 isophotal diameter of 12.52 kiloparsecs (40,800 light-years). It is about five times more luminous than the Milky Way and its central region is about one hundred times more luminous. The starburst activity is thought to have been triggered by interaction with neighboring galaxy M81. As one of the closest starburst galaxies to Earth, M82 is the prototypical example of this galaxy type.


Image Details
Date
February 15
March 1, 5, 16, 2023
LOCATion
Hannover (Germany)
Sky Quality
Bortle 5
Telescope
Celestron RASA 8 (203/400 f/2)
Mount
Skywatcher EQ6-R Pro
Main Cameras
ZWO ASI 2600 MC Pro
Gain 100, Offset 18, -10°
ZWO ASI 1600MM Pro
Gain 75, Offset 15, -5°
Focuser
Celestron Motorfocus
Filter
IDAS NBZ
Baader S-II 6.5nm
Exposure
RGB: 420 × 60″ (7h)
Lum: 475 × 30″(3h 57′ 30″)
Lum: 182 × 60″ (3h 2′)
Ha: 100 × 120″ (3h 20′)
Total: 17h 19′ 30″
Guiding
ZWO ASI 120MM, PHD2
Calibration
Flats, Darks, Darkflats
Software
N.I.N.A., EQMod
Other
Artesky Filter Holder
Processing
Astropixelprocessor, Photoshop, Pixinsight
  
  
Gallery
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