Scientists and telescope operators focus on data readouts set up inside NASA's SOFIA airborne observatory during telescope characterization tracking tests

Wispy clouds are illuminated by a bright quarter moon behind the tail of NASA's SOFIA flying observatory during telescope characterization testing in 2008

Mar 10, 2008

NASA's SOFIA flying observatory was captured in striking relief during nighttime telescope characterization tests in Palmdale, Calif., in March 2008

Mar 10, 2008

This backlit photo of SOFIA's infrared telescope during characterization testing shows the cell-like construction of the telescope's 2.5-meter primary mirror

Mar 10, 2008

As SOFIA's large telescope assembly slowly rotates, scientists and telescope operators review data readouts and imagery on their monitors during tracking tests

Mar 10, 2008