A large mobile crane and hi-lift are maneuvered into place for removal of the aperture assembly and cavity doors from NASA's SOFIA observatory aircraft.
SOFIAStratospheric Observatory for Infrared Astronomyaperture mounting assemblyupper rigid door assemblycavity doorsremovalAmes Research CenterDryden Aircraft Operations FacilityPalmdaleSite 9Clipper LindberghGerman-built 100-inch 2 5 meter diameter infrared telescope20 tonshighly-modified Boeing 747SP aircraftDLR Deutsches Zentrum fuer Luft- und Raumfahrt German AerospaceL-3 Communications Integrated SystemsUniversities Space Research AssociationUSRADeutsches SOFIA InstitutDSI