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A 3-D movie of the universe, no glasses needed: construction begins on Large Synoptic Survey Telescope - Purdue University
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Pegasus Constellation Wikipedia Sky Telescope, Nature, Outdoors, Astronomy, Plot Transparent Png – Pngset.com
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English: Orion ED120 120mm apo objective refractor on Orion's Sirius EQ-G GoTo and GPS equipped German equatorial mount with portable 12 volt power supply. It has a 9X50mm right angle correct image
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The Gregorian telescope employs a concave secondary mirror that reflects the image back through a hole in the primary mirror. | Webel IT Australia
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