M46 (NGC 2437)
Constellation: Pup
Object Type: Open Cluster
RA: 7h 41m 46s
Dec: -14° 48' 36"
Magnitude: 6.1
Recommended minimum aperture: 50mm
Charts for 50mm Binocular (5° aperture circle). Click on a chart to print it.
Location:
This pair of clusters lies 5° to the south of α Monocerotis; alternatively, if you cannot identify α Mon, you can find the clusters by panning two and a half 5° fields E, then half a 5° field N from α CMa (Sirius).
What You Should See:
M46 and M47 offer, in the same field of view, a comparison between the binocular appearances of open clusters. M46 is far more compact and you may not be able to resolve any stars in 10×50 binoculars. On the other hand, M47 is much looser and over half a dozen stars can be easily resolved with the 10×50s.
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