M 25

100% resolution (1650 x 1239px)

Exposure data

Telescope:    4.5" Newton f=440mm
Camera:    SBIG ST2000XM
Filters:    SBIG LRGB
Exposure times:    L:24x3min R:4x3min G:4x3min B:4x3min
Exposure time total:    1h 48min
Mount:    Vixen New Atlux
Location:    Erdweg/Germany (500m)
Date:    2012-07-22+23
 
Object data of M 25

Object type:    Open cluster (l 2 p)
Size:    32'
Magnitude:    4.6 mag
Constellation:    Sagittarius
Distance:    2100 Ly