- PrimaLuceLab PLUS curved blocks for Celestron C8, C9.25, C11, EdgeHD 800, 925, 1100 or Meade SC and ACF 8" PLL-SAG925 $69.00Starlight Instruments Adapter 1.25" for Astro-Tech 6", 8" and GSO 6", 8" RC TelescopeSI-A15-1503-2 $50.00Starlight Instruments Adapter 2" for Meade Lightbridge Dobsonian Truss TelescopesSI-A20-200A-11 $130.00