- Pegasus Astro FocusCube Zero Celestron SCT C6, 8, 9.25'' and Edge, RASA 8"PEG-FCZERO-SCT68925 $354.00PrimaLuceLab Adapter ESATTO 3" for GSO/Orion/TPO Ritchey-Chretien 10, 12, 14 and 16 inches PLL-3600236 $125.00Starlight Instruments Adapter 2" for Meade Lightbridge Dobsonian Truss TelescopesSI-A20-200A-11 $130.00Starlight Instruments Adapter 2" for Orion/Celestron/Skywatcher/Vixen/Synta TelescopesSI-A20-292 $150.00