SOFIA, with her cavity doors open and a NASA F/A-18 in tow (Photo: NASA/Jim Ross)
The EXES spectrograph mounted on SOFIA's on-board telescope (Photo: NASA/SOFIA/EXES/Mathew Richter)
NASA scientists are eager to get to grips with a new toy for observing the heavens, the Echelon-Cross-Echelle Spectrograph (EXES). Mounted on a heavily-customized Boeing 747, the spectrograph has undergone two successful test flights and when declared operational, will comb the sky for infrared frequency light aboard the largest flying telescope ever constructed.
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