Exposure data
Telescope: 4.5″ Newton f=440mm
Camera: SBIG ST8300M
Filters: SBIG RGB + Astronomik Hα (13nm)
Exposure times: Hα: 24x5min L:4x5min R: 4x5min G: 4x5min B: 4x5min
Exposure time total: 3h 20min
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2009-05-19+20
Object data of Sh2-9
Object type: Emission nebula
Size: –
Magnitude: 2.9 mag
Constellation: Scorpion
Distance: 570 Ly
