Features: FMC 68-degree ultra wide long eye relief eyepiece. Standard 1.25 inch astronomy telescope 4 piece eyepiece kit. Super wide 68 degree apparent field offers expansive views of the moon, star clusters, and the milky way. Multi-element design delivers sharp images with good color correction and contrast. Aluminum 1.25 eyepiece barrel is internally blackened to eliminate light scattering. Threaded to accept 1.25 filters. Specification: Color: Black Material: Aluminum Alloy + Optical Glass Eyepiece Series: 68-Degree Ultra Wide Eyepiece Focal Length: 6mm9mm15mm20mm Barrel Size: 1.25 (31.7mm) Apparent Field of View: 68 Degree Coating: Fully Multi-Coated Broadband Eye Relief: 17mm Structure Design: 5-elements in 3 groups (6mm); 6-elements in 4 groups (9mm); 4-elements in 3 groups (15mm); 5-elements in 3 groups (20mm); Lens material: Optical Glass Lenses Body Material: Fully Metal Filter Threads: Standard 1.25 Filter Thread Rubber Eye Guard: Yes Weight: Approx. 556g Package List: 1 * 1.25 68-Degree Ultra Wide 6mm Eyepiece 1 * 1.25 68-Degree Ultra Wide 9mm Eyepiece 1 * 1.25 68-Degree Ultra Wide 15mm Eyepiece 1 * 1.25 68-Degree Ultra Wide 20mm Eyepiece Telescope in the picture is prop.
