Framed here are four open clusters. M46, M47, NGC 2423 located north of M47, and the smaller cluster NGC 2425 south-east of M47.
January 26, 2009
Constellation: Puppis
Location: Mojave National Preserve, CA
Optics: Borg 77EDII at f/4.3 on HEQ5 mount
Camera: Canon 20Da
Exposures: 21 RAW light frames of 60 seconds, ISO 800.
Process: Calibrated with 20 dark frames and 20 flat frames in ImagesPlus. Combined using MinMax Excluded. Colour balance in Photoshop.