Ritchey-Chrétien Telescopes - Telescopes for observatories
GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube | GSO Ritchey-Chretien 304mm f/8 #telescope with truss carbon fiber tube is perfect for #astrophotography is perfect for those looking for a quality...
GSO RC8 F8 Hyperboloid Astronomical Telescope Deep Space Planetary Photography - AliExpress