Exposure data
Telescope: 4.5″ Newton f=440mm
Camera: SBIG ST8300M
Filters: Baader HαLRGB
Exposure times: Hα: 12x10min L: 78x10min R: 12x10min G: 12x10min B: 12x10min
Exposure time total: 21h
Mount: 10 Micron GM 1000 HPS
Location: Erdweg/Germany (500m)
Date: 2013-02-09+10+11 + 2013-03-03+04
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
Object data of M 82
Object type: Galaxy (irregular)
Size: 11.2′ x 4.3′
Magnitude: 8.6 mag
Constellation: Ursa Major
Distance: 14 Mio Ly