12" (304mm) aperture, f/8 Ritchey-Chretien optics housed in a thermally stable carbon fiber Serrurier-design truss tube assembly
Hyperboloid primary and secondary mirrors made of low-expansion quartz glass with 96% reflectivity for bright imaging performance
CNC-machined 3.3" dual-speed (10:1) Crayford focuser equipped with a sturdy linear-bearing rail to provide extra support for heavy imaging loads without slippage or flexure; 2" and 1.25" compression ring accessory collars
D-style dovetail mounting bars on top and bottom of tube assembly, plus a dovetail finder scope base for attachment of any Orion finder scope (sold separately)
Three built-in 1.5" 12V DC-powered cooling fans accelerate equilibration of the primary mirror to ambient temperature