I have five telescopes. Four are astrographs – two Ritchey-Chretien (RC) reflectors and two APO refractors. The fifth is a fast Newtonian that last saw […]
Read MoreI have five telescopes. Four are astrographs – two Ritchey-Chretien (RC) reflectors and two APO refractors. The fifth is a fast Newtonian that last saw […]
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