M 3

100% resolution (1350 x 999px)

Exposure data

Telescope:    12" Meade ACF f=1500mm
Reducer:    Lumicon Giant Easy Guider
Camera:    SBIG ST2000XM
Filters:    SBIG LRGB
Exposure times:    L:30x2min R:5x2min G:5x2min B:5x2min
Exposure time total:    1h 30min
Mount:    Vixen New Atlux
Location:    Erdweg/Germany (500m)
Date:    2007-03-15
 
Object data of M 3

Object type:    Globular cluster (VI)
Size:    18'
Magnitude:    6.2 mag
Constellation:    Canes Venatici
Distance:    33900 Ly