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Not quite sure what you mean John but if you meant the manufacturer, Gemini Jets is the maker.
If you meant the mission;
"NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) is the world's largest airborne astronomical observatory, complementing NASA’s space telescopes as well as major Earth-based telescopes.
SOFIA features a German-built far-infrared telescope with an effective diameter of 2.5 meters. The telescope weighs 19 tons and is mounted in the rear fuselage of a highly modified Boeing 747SP aircraft.
Flying at altitudes of between 39,000 to 45,000 feet (12 – 14 kilometres) and above 99 percent of the water vapour in the atmosphere, SOFIA facilitates observations that are unobtainable from telescopes on the ground. Because SOFIA can fly virtually anywhere in the world, change instruments between flights, and implement new capabilities, it provides greater adaptability than any space-based telescope."
Source: http://www.nasa.gov/mission_pages/SOFIA/FS-096-DFRC.html
If you meant the mission;
"NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) is the world's largest airborne astronomical observatory, complementing NASA’s space telescopes as well as major Earth-based telescopes.
SOFIA features a German-built far-infrared telescope with an effective diameter of 2.5 meters. The telescope weighs 19 tons and is mounted in the rear fuselage of a highly modified Boeing 747SP aircraft.
Flying at altitudes of between 39,000 to 45,000 feet (12 – 14 kilometres) and above 99 percent of the water vapour in the atmosphere, SOFIA facilitates observations that are unobtainable from telescopes on the ground. Because SOFIA can fly virtually anywhere in the world, change instruments between flights, and implement new capabilities, it provides greater adaptability than any space-based telescope."
Source: http://www.nasa.gov/mission_pages/SOFIA/FS-096-DFRC.html
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