Exposure data
Telescope: 12" Meade ACF f=3050mm
Camera: SBIG ST2000XM
Filters: SBIG LRGB + Astronomik Hα (13nm)
Exposure times: L:36x4min R:10x4min G:10x4min B:10x4min (L:1x1 RGB:2x2) + Hα:10x4min (2x2)
Exposure time total: 5h 4min
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2009-08-15+16
Object data of NGC 40
Object type: Planetary nebula
Size: 0.6' x 0.4'
Magnitude: 12.3 mag
Constellation: Cepheus
Distance: 3500 Ly
