Exposure data
Telescope: 4.5″ Newton f=440mm
Camera: SBIG ST2000XM
Filters: SBIG LRGB
Exposure times: L: 40x2min R: 10x2min G: 10x2min B: 10x2min
Exposure time total: 1h 20min
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2009-09-26
Object data of M 103
Object type: Open star cluster (II 2 m)
Size. 6′
Magnitude: 7.4 mag
Constellation: Cassiopeia
Distance: 7000 Ly