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HIPO Photometer Installed on SOFIA Telescope
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HIPO Photometer Installed on SOFIA Telescope

January 3, 2013
The 2.5-meter infrared telescope peers out from its cavity in the SOFIA airborne observatory during nighttime line operations testing at Palmdale, Calif. November 12, 2008 NASA Photo / Tom Tschida ED08-0296-11


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