Telescope: 10" Lacerta Newton f=1000mm
Camera: SBIG ST8300M
Filters: Baader HαLRGB
Exposure times: Hα:9x8min L:48x6min R:16x4min G:16x4min B:16x4min
Exposure time total: 9h 12min
Mount: 10 Micron GM 1000 HPS
Location: Erdweg/Germany (500m)
Object data of M 81
Object type: Galaxy (Sb)
Size: 26.9' x 14.1'
Magnitude: 7.0 mag
Constellation: Ursa Major
Distance: 12 Mio Ly
Notes: Galactic Cirrus, also known as Integrated Flux Nebula is spread over the whole image field.
Below you can find an inverted image of galactic cirrus around M 81