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SVBONY SV503 Astronomical Telescope 102mm F7 ED Extra Low Dispersion Refractor OTA for Astrophotography
In a Mirror Brightly”: French Attempts to Build Reflecting Telescopes Using Platinum - Seymour L. Chapin, 1972
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How To Use An Astronomical Telescope | Book by James Muirden | Official Publisher Page | Simon & Schuster
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