Thomas Keilig, telescope assembly manager for German SOFIA Institute, points out features of the 100-inch primary mirror of the SOFIA telescope to Airborne Astronomy Ambassador Kathy Fredette of Desert Willow Intermediate School in Palmdale, California.
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Thomas Keilig, telescope assembly manager for German SOFIA Institute, points out features of the 100-inch primary mirror of the SOFIA telescope to Airborne Astronomy Ambassador Kathy Fredette of Desert Willow Intermediate School in Palmdale, Calif.June 8, 2011
NASA / Tom Tschida