Teleskop-Express: Asterion Primary Mirror Fan for Skywatcher 6" Newtonians and Dobsonians
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Teleskop-Express: TS-Optics Primary Mirror Fan for Newton telescopes
Installed a cooling fan on my telescope | Atlantic StarHopper's Astronomy Blog
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Teleskop-Express: Asterion Primary Mirror Fan for Skywatcher 10" Newtonians and Dobsonians
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Teleskop-Express: Asterion Primary Mirror Fan for Skywatcher 8" Newtonians and Dobsonians
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DIY Active Cooling of Newtonian Telescope - Deep Sky Watch
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Some telescopes use a fan to help to rapidly cool the primary mirror.... News Photo - Getty Images
