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SOFIA
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SOFIA

January 4, 2013
This close up of SOFIA's German-built telescope assembly offers a view of both the primary and secondary mirrors, the latter a small black circle in the center supported by three braces. The white lower flexible door is seen on the bottom of the photo, while the aperture is the dark semi-circle on the right. The orange instrumentation wiring will remain on the aircraft through flights analyzing performance of the aircraft with the upper rigid door open and closed. September 24, 2009 NASA Photo / Tom Tschida