Terry Herter, principal investigator for Cornell University's FORCAST instrument, and Cornell research associate Joe Adams check the alignment of the instrument to the SOFIA telescope's secondary mirror.
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Terry Herter, principal investigator for Cornell University’s FORCAST instrument, and Cornell research associate Joe Adams check the alignment of the instrument to the SOFIA telescope’s secondary mirror during nighttime, ground-based checkout operations.October 22, 2010
NASA Photo / Tom Tschida