Rodgers, A. W.
The Coalsack is a single dark nebula in Crux. It is
probably the most conspicuous compact absorbing cloud in the
southern Milky Way, visible to the naked eye against the background
of diffuse light from the faint Milky Way stars. The
only star visible in the body of the nebula is HD 110432, a Bo star
of visual magnitude 5.4. The approximate centre of the nebula is at
right ascension 12h 40m and southern declination 62° 40’, i.e. at
galactic longitude 270° and latitude 0°. The main body...[Show more]
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