Digital Sky Survey image of NGC 6531 = M21
![[DSS image of NGC 6531 = M21]](http://archive.stsci.edu/cgi-bin/dss_search?r=18:04.6&d=-22:30&e=J2000&h=15.6&w=15.6&f=GIF&c=none)
NGC 6531 = M21.
Right Ascension = 18:04.6, Declination = -22:30 (2000.0), Field: 15.6 arc minutes.
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