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Req  4.5:  Users shall be able to select which data returned by a
	   DAL service query is to be downloaded to local disk.
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http://skyview.gsfc.nasa.gov/cgi-bin/images?position=204.253829%2C-29.865761&survey=dss2b&pixels=300%2C300&sampler=Clip&size=0.10000000000000002%2C0.10000000000000002&projection=Tan&coordinates=J2000.0&return=FITS                           
http://skyview.gsfc.nasa.gov/cgi-bin/images?position=204.253829%2C-29.865761&survey=dss2r&pixels=300%2C300&sampler=Clip&size=0.10000000000000002%2C0.10000000000000002&projection=Tan&coordinates=J2000.0&return=FITS                           
http://skyview.gsfc.nasa.gov/cgi-bin/images?position=204.253829%2C-29.865761&survey=dss2ir&pixels=300%2C300&sampler=Clip&size=0.10000000000000002%2C0.10000000000000002&projection=Tan&coordinates=J2000.0&return=FITS