The 2 inch diagonal features dielectric coatings with 93 percent reflectivity across the visible spectrum and a 1/10 wave mirror for bright and true images;
It fits all rear cells of Schmidt-Cassegrain telescopes equipped with a big 2 inch focuser and can use with refractor telescopes with not included SCT adapter which you can find in our store;
Improved attachment design features a brass clamping ring which does not mar and provides a more secure connection;
Universal 2" Compatibility: Perfect fit for 2 inch telescope eyepieces; barlow lenses; diagonal prisms; T-adapters; focusers and other 2 inch telescope accessories; ensures seamless protection across your observation equipment
Dustproof: Dual-layer protection with 6 dust caps; shields lens surfaces from airborne particles; fingerprints and accidental scratches; maintains optical clarity for planetary and deep-sky viewing