Exposure data

Telescope:    4.5" Newton f=440mm
Camera:    SBIG ST8300M
Filters:    Baader HαOlllSll
Exposure times:    Hα:12x15min Olll:6x15min Sll:6x15min
Exposure time total:    6h
Mount:    10Micron GM 1000 HPS
Location:    Erdweg/Germany (500m)
Date:    2012-03-27+28

Object data of NGC 2237

Object type:    Open cluster (ll 3 r n) with emission nebula
Size:    80' x 60'
Magnitude:    6.0 mag
Constellation:    Monoceros
Distance:    5000 Ly