ADM Radius Blocks for Astro-Tech 6" RC Telescopes
ADM Radius Blocks for Astro-Tech & Orion 6" RC
Pair of radius blocks for 6" f/9 Ritchey-Chretien optical tubes from Astro-Tech, Orion, GSO, and TSO. Comes with mounting hardware. Uses mounting holes already available on the OTA. Dimensions: .75" long x 4" wide x 1" thick. Weighs 4 oz.