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collimation of Ritchey Chretien telescope
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22-06-2019, 12:03 PM
billdan
(Bill)
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Join Date: Mar 2012
Location: Narangba, SE QLD
Posts: 1,551
That was strange, when I copied Glens post it must have corrupted the link. Try this it works.
https://www.teleskop-express.de/shop...skoptypen.html
billdan
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