urn:nasa:pds:context:instrument:rebelxt.n-a 1.0 1.7.0.0 Product_Context 2016-10-01 1.0 extracted metadata from PDS3 catalog and modified to comply with PDS4 Information Model urn:nasa:pds:context:instrument_host:unk.unk::1.0 instrument_to_instrument_host Yingst, R.A., M.E. Schmidt, and R.C.F. Lentz, Understanding Mars at the microscale by imaging terrestrial analogs: The handlens atlas, Lunar Planet. Sci. Conf.., 38th, Abs. 1130, 2007. reference.YINGSTETAL2007 CANON EOS DIGITAL REBEL XT Imager not applicable not applicable Instrument Overview =================== Images for the Mars analog hand-lens-scale image data base were acquired with a Canon Rebel XT, a digital SLR (single lens reflex) camera with an 8.0 Mpxl sensor. For images taken at microscale-resolution (10 micrometer/pixel), a 100mm f/2.8 macro lens was threaded into the lens adaptor and a twin-tube ring light was mounted on the extended lens to assure uniform illumination. A tripod with a three-way head provided stability during high-resolution imaging. The same camera was used to take context images at a variety of resolutions. For further details on the camera system, see [YINGSTETAL2007].