THESE ARE BRAND NEW SPHERICAL PRIMARY MIRRORS
700mm Focal Length
Diffraction Limited L4 (1/4 wave in Sodium Light)
Aluminized(92%) and SiO(Quartz Overcoat)
Resolving Power(arc seconds): .97
Pre Set Collimation Dot hand Crafted and Ronchi Tested for high Reflectivity
Please see other listings for secondary mirrors for those that like to build their own telescopes.
FREE ship rate is for within the Continental U.S. Write for international rate.
Filed under: Eyepieces & Accessories