- PlaneWave Electronic Focus Accessory (EFA) Kit for CDK14, CDK17, CDK20, & CDK24PW-240901-KIT $1,175.00Starlight Instruments Adapter 1.25" for Astro-Tech 6", 8" and GSO 6", 8" RC TelescopeSI-A15-1503-2 $50.00Starlight Instruments Adapter 2" for Astro Tech 72mm and William Optics 72mm TelescopesSI-A20-273 $190.00Starlight Instruments Adapter 2" for Meade Lightbridge Dobsonian Truss TelescopesSI-A20-200A-11 $130.00Starlight Instruments Adapter 2" for MK190 Maksutov-Newtonian, Intes Alter MN84 Mak Newton, & ES8 AstrographSI-A20-MN190 $130.00