M81 & M82

Image information:

Date: 05/10/2021
Equipment: Moravian C1+ 12000A camera through APM/LZOS 105/650 APO telescope with IDAS HEUIB-II filter on Losmandy GM8 mount. The telescope was working at f4.9 using TS 2" 0.79x corrector / reducer.
Image type: OSC
Exposure time: 60X180s, gain 40.

Object information:

Object designations:

  • M81, NGC3031, Bode's galaxy
  • M82, NGC3034, Cigar galaxy
Object type:
  • M81 Spiral galaxy
  • M82 Irregular galaxy
Object size:
  • M81 21' X 10'
  • M82 9' X 4'
Constellation: Ursa Major
M81 is the most prominent galaxy of "M81 Group", group of 34 galaxies in the constellation Ursa major. Several tens of million years ago a close encounter occurred between the galaxies M81 and M82. During this event, larger and more massive M81 has dramatically deformed M82 by gravitational interaction. Even today their centers are only 130 kly apart. Disturbed core of M82 is a strong source of radio and infrared radiation. M81 and M82 are some 12000 kly distant from us.

Related images:

List of related images:

M81&M82, LRGB, ST2000XM through WO ZS105ED telescope