Spaceimages - Astrofotografie by Jens Zippel

Messier 82 (M82 or "cigar galaxy") is a spiral galaxy in the constellation Ursa Major. The galaxy probably corresponds to the morphological type of a barred spiral galaxy, i.e. the arms originate at the ends of a beam that is not particularly long in this case.

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Object:	M 82 HaLRGB
Date of exposures:	20.04.2016, 21.04.2016, 20.03.2018, 01.04.2018
Distance:	12 Mio. Lightyears
Exposures:	Ha 5nm: 3 x 300" + 18 x 600", Lum: 19 x 180" + 12 x 300", RGB: 35 x 280" + 11 x 300", Sum.: 8,8 hrs.
Telescope:	10'', F4 Newton
Focal length:	1000mm
Filter:	Astrodon E-Series, LRGB, H-Alpha 5nm
Camera:	Atik 460Exm
Guiding:	MGEN
Mount:	EQ8

In its vicinity is the bright spiral galaxy M81, with which it forms a physically bound pair and the nucleus of the M81 galaxy group about 12 million light years away. The interaction with M81 during a close fly-by about 500 million years ago dramatically changed the M82 galaxy. In the inner area, the rate at which new stars are formed from interstellar matter has greatly increased (starburst). This makes M82 one of the brightest infrared galaxies and one of the brightest galaxies in the radio range. As a consequence of the star burst, supernova explosions produce a turbulent gas movement, which is observed as an outflow perpendicular to the galaxy plane of M82.

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M 82 Galaxie