NGC 2477 (Gary Imm)

Celestial hemisphere: Southern · Constellation: Puppis (Pup) · Contains: NGC 2477

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NGC 2477

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NGC 2477

This object is an open cluster of about 300 stars located 4000 light years away in the southern constellation of Puppis. When I heard that some consider this to be one of the top open clusters in the sky, I as doubtful. It isn't even a Messier object. But I was wrong - this is a majestic cluster. It approaches a globular cluster in the sheer density of stars around the center, but because it is an open cluster, all of the stars are bright and resolved including many red giants. Although the magnitude of the brightest star is only 9.8, the magnitude of the cluster is a stunning 5.8, 4 magnitudes higher, because of the number of uniform bright stars in the cluster. The fact that it is so low in the southern sky (3 degrees transit above the Paris horizon) is the only thing which prevented it from joining the other 3 Messier clusters from Puppis.

The refractors!
Cloudy Nights
Open Star Clusters
ZWO ASI1600MM/QHY163M

Open Clusters

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	1883549
PixInsight job	8Y53M0YAIFK59RCTMDA2R56DVJP7T466
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	07h52m15s.306
RA (top/left)	07h50m27s.465
RA (top/right)	07h54m16s.670
RA (bottom/right)	07h54m01s.944
RA (bottom/left)	07h50m15s.487

Dec (center)	-38°30′37″.100
Dec (top/left)	-38°52′09″.19
Dec (top/right)	-38°49′15″.98
Dec (bottom/right)	-38°09′00″.79
Dec (bottom/left)	-38°11′52″.36

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NGC 2477

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