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Exposure data
Telescope: 4.5" Newton f=440mm
Camera: SBIG ST2000XM
Filters: Baader LRGB + Astronomik Hα (13nm)
Exposure times: Hα:18x10min L:2x10min R:2x10min G:2x10min B:2x10min
Exposure time total: 5h
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2011-09-23+24
Object data of M 52
Object type: Open cluster (ll 2 r)
Size: 13'
Magnitude: 6.9 mag
Constellation: Cassiopeia
Distance: 4600 Ly
Object data of NGC 7635
Object type: Emission nebula
Size: 15'
Magnitude: 11.0 mag
Constellation: Cassiopeia
Distance: 7100 Ly