Optics and mount

Celestron C8CF f/10 on Takahashi Em-200.

CCD camera

Artemis 4021. Guided with MiniBorg 60ED and DSI pro II.

Filters

Astrodon LRGBHa

Exposures

L:5 x 300 sec. Bin. 1x1. RGB 10 x 300 sec. bin 1x1. Ha 12 x 300.

Software

MaximDL (Flats,darks,bias), Photoshop CS2 (levels,curves).

Date and Location

29.03.2008 / 59 11 47.83 N. - 10 22 29.33 E.

Object information

The M81 group is a famous group of galaxies mainly because it contains the famous M81/M82 pair of galaxies discovered in 1784. M81 galaxy is the dominant galaxy in the group and it is similar in size to the Milky Way. This galaxy is one of the brightest galaxies in the sky, and although it is too faint to see with the naked eye, it is an easy galaxy to find with binoculars if you know where to look.

M82 (left) is a remarkable galaxy of peculiar type. It is usually classified as irregular, though probably a distorted disk galaxy, and famous for its heavy star-forming activity, thus a prototype member of the class of starbursting galaxies. 

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