The Swift mosaic of the Small Magellanic Cloud contains about 250,000 ultraviolet sources. The 57-megapixel image was assembled from 656 separate snapshots. The image has a total exposure time of 1.8 days, an angular resolution of 2.5 arcseconds at full size, and maps UV light at wavelengths between 1,600 and 3,300 angstroms. The SMC is about 7,000 light-years across.
–NASA, Swift, S. Immler (Goddard) and M. Siegel (Penn State)
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