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Part of the constellation Scorpius centred on NGC 6357 which has star cluster Pismis 24 in its centre. This image is a colour composite taken by the Digitized Sky Survey (DSS), the field of view is 3.8x3.3 degrees.
Credit: Davide De Martin (ESA/Hubble), the ESA/ESO/NASA Photoshop FITS Liberator & Digitized Sky Survey 2
http://www.space.com/18749-wide-field-view-of-area-of-ngc-6357.html