BinoSky - best bets for stargazing with binoculars
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M47, an open cluster in Puppis
A map of the star field. Magnitudes are given without a decimal point, e.g. 67 is to be interpreted as magnitude 6.7.

How to Find It
Starting from Sirius, follow the dim asterisms leading in a chain to M47.

An enjoyable view even from light-polluted areas, provided that it is high enough above the horizon. The cluster is bracketed by two bright stars, of magnitudes 5.6 and 6.4. Cutting diagonally through the center is a chain of four 7th and 8th magnitude stars; the innermost two of these actually consist of a magnitude 7.9 star on top plus an unresolved pair of magnitude 7.9 stars under it. The two 5th magnitude stars are not part of the cluster.

60-degree field of view

Data (Janes, Duke, and Lynga, 1987)
RA 07 37
dec -14 30
total V magnitude 4.4
NGC number 2422
Trumpler class I 3 m
angular diameter 25'
distance 470 pc
age (Myr) 78
integrated B-V .02
observed stars 117
earliest sp. class B3
brightest star 5.0

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(c) Copyright 1998 Benjamin Crowell. All right reserved.
Photos from the Digitized Sky Survey,
Sky maps created by Your Sky,