GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube and ESATTO 3": Buy online | Primalucelab.com
A New Ritchey-Chrétien Telescope for Astrophotography (RC6)
GSO Ritchey-Chretien 203mm f/8 with metal tube: Buy online | Primalucelab.com
Review of the TPO/GSO/etc 6" f/6 Newtonian OTA telescope - YouTube
GSO 8" f/12 Classical Cassegrain Reflector VS C8 f/10 XLT SCT -- for visual which is better for lunar and planetary? - Beginners Forum (No astrophotography) - Cloudy Nights