M103 (NGC 581)
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Type Location r.a. dec. Size Magnitude Distance
Open Cluster Cas 01h33.2 60°42' 5' 7.4 8.5 kly

Messier 103 (also known as M103, or NGC 581) is an open cluster where a few thousand stars formed in the constellation Cassiopeia.
It is one of the most distant open clusters, with distances of 8,000 to 9,500 light years from the earth and ranging about 15 light years apart. There are about 40 member stars within M103.

 

Cluster detail:

More from Wikipedia

Date Telescope Binning Exp Time (s) Special processing Notes
Nov 6, 2003 Centurion
18"
L 1:1
RGB 3:1
L 3x300
R,G,B 300
LRGB, DDP