A homemade 20 inch dob lightweight telescope, DS-5
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Obsession Telescopes / Telescopes / 20" Classic
What can I expect from a 20" Dobsonian? - Major & Minor Planetary Imaging - Cloudy Nights
What Can You See With a 20 Inch Dobsonian? – Telescope Boss
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Explore Scientific - Generation II - 20-inch Truss Tube Dobsonian Tele
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RCOS: 20 inch Carbon Tube Telescope
Obsession Telescopes / Telescopes / 20" Classic
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Explore Scientific - Generation II - 20-inch Truss Tube Dobsonian Tele
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20 inch Dobsonian Telescope construction - YouTube
Obsession Telescopes / Telescopes / 20" Classic
Clyde Bone and His Two Unusual Mersenne Telescopes! – Tele Vue Optics, Inc. Blog
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Obsession Telescopes / Telescopes / 20" Classic
Obsession Telescopes / Telescopes / 20" Classic
Moore Observatory Remote/Robotic Telescope
MEADE 20" RCX - Ritchey-Chretiens, Dall-Kirkhams, and Other Designs - Articles - Articles - Cloudy Nights
Bob Bunge's TJ2 - Story of a 20-inch Dobsonian Telescope, the history of a 20+ year old Dobsonian
