Exposure data
Telescope: Vixen R200SS f=800mm
Camera: SBIG ST2000XM
Filters: SBIG LRGB
Exposure times: L: 15x5min R: 3x5min G: 3x5min B: 3x5min
Exposure time total: 2h
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2005-05-26
Object data of NGC 7023
Object type: Reflection nebula
Size: 18′
Magnitude: 7.1 mag
Constellation: Cepheus
Distance: 1300 Ly