Exposure data
Telescope: 4.5" Newton f=440mm
Camera: SBIG ST2000XM
Filters: Baader LRGB + Astronomik Hα (13nm)
Exposure times: Hα:28x10min L:30x8min R:10x8min G:8x8min B:8x8min
Exposure time total: 12h 24min
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2012-08-17+18+19
Object data of Sh2-155
Object type: Emission nebula
Size: 50' x 30'
Magnitude: 7.7mag
Constellation: Cepheus
Distance: 2400 Ly
