M 103

Full resolution (1600x1200 px  600kB)

Object data of M103

Object type: open cluster (II2m)
Size: 6'
Magnitude: 7.4 mag
Constellation: Cas
Distance: 7,000 Ly
Notes: M103 is a young open star cluster (age 20 million years) in the constellation Cassiopeia.

Exposure data

Date: 2009-01-09 + 10
Location: Nussbach / Austria (400m)
Telescope: 12" Newtonian telescope (f=1139mm)
Camera: ST2000XM with CFW8 and Baader Filters
Binning: L 1x1 / RGB 1x1
Exposure time: L 52x2m / R 8x5m / G 8x5m / B 8x5m
Exposure time total: 3h 44m
Notes: Full moon