Exposure data

Telescope:    4.5" Newton f=440mm
Camera:    SBIG ST2000XM
Filters:    SBIG LRGB
Exposure times:    L:20x3min R:6x3min G:6x3min B:6x3min
Exposure time total:    1h 24min
Mount:    Vixen New Atlux
Location:    Erdweg/Germany (500m)
Date:     2011-02-05
 
Object data of M 41

Object type:    Open cluster (ll 3 m)
Size:    38'
Magnitude:    4.5 mag
Constellation:    Canis Major
Distance:    2300 Ly
 
Notes:    North is left