Exposure data
Telescope: 12″ Meade ACF f=1500mm with Reducer Lumicon Giant Easy Guider
Camera: SBIG ST2000XM
Filters: SBIG LRGB
Exposure times: L: 20x2min R: 10x2min G: 10x2min B: 10x2min
Exposure time total: 1h 40min
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2008-05-08
Object data of M 13
Object type: Globular cluster (V)
Size: 20′
Magnitude: 5.9 mag
Constellation: Hercules
Distance: 22000 Ly
