A telephoto lens shot of the M50 to M46/M47 area of Canis Major-Monoceros border, simulating the field of binoculars. M50 is at upper ight, M46 & M47 at left edge. Red nebula is IC 2177 Seagull Nebula. Taken from Coonabrarbran, Australia, Dec 15, 2012. Some incoming cloud added glow from off-frame Sirius in corner of frame. This is a stack of 2 x 5 minute exposures at f/2.8 with the 135mm lens and Canon 5D MkII at ISO 800. Field also contains clusters NGC 2360 and NGC 2353, and nebula NGC 2359 Thor’s Helmet.
The Amazing Sky 