NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC4815
Basic Information
Location and Magnitude
Right Ascension: 12:57:58.3
Declination: -64:57:42
Constellation: MUS
Visual Magnitude: 8.6
Historic Information
Discoverer: Herschel J.
Year of discovery: 1834
Discovery aperture: 18.3
Observational
Summary description: Cl, pL, pRi, iF, st 10…18
Sub-type: I3m
Steve's Notes
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NGC 4815
13.1" (2/20/04 - Costa Rica): at 105x, two mag 10 stars are surrounded by a number of very faint stars within 3'. The cluster is superimposed on a fairly bright milky background of unresolved stars. A third mag 10 star is apparently outside the border off the SW edge. At 200x, the unresolved glow is most prominent at the following end and 12-15 mag 13 stars are sprinkled over the backround glow (the cluster was viewed at a very low elevation which probably detracted from the view). This reddened cluster is heavily obscured and is located just within the SE border of the Coalsack and barely over the border into Musca, 1.1 degrees ENE of the bright double star Theta Muscae (5.9/7.7 at 5"). The two brighter mag 10 stars (separated by 1.3') may be foreground stars and not actual cluster members.