Exposure data
Telescope: Vixen VC200L (8" Cassegrain f=1260mm)
Camera: SBIG ST8300M
Filters: Baader LRGB
Exposure times: L:16x5min R:3x5min G:3x5min B:3x5min
Exposure time total: 2h 5min
Mount: 10 Micron GM 1000 HPS
Location: Erdweg/Germany (500m)
Date: 2014-03-13
Object data of M 46
Object type: Open cluster (ll 2 r)
Size: 27'
Magnitude: 6.1 mag
Constellation: Puppis
Distance: 4500 Ly
Notes: Planetary nebula NGC 2438 appears to lie within the cluster M 46
