SVBONY 68 degree ultra wide long eye relief eyepiece with a comfortable wide field for planetary observing,Super wide 68 degree apparent field offers expansive views of the moon;star clusters;and the Milky Way. It can be used in any astronomical telescopes that fits for standard 1.25" eyepieces. 68 degree ultra wide FOV Comfortable ultra-wide field, get bright and sharp viewing. Fully multi coated lens without introducing additional chromatic aberration; make image more sharper. Broadband green film optical glass. Chromatic corrected; Soft rubber eye guard Fold down soft rubber eye guard is more comfortable for eyeglass wearers Specifications:Structure design:4-elements in 3 groups (9mm) Eyepiece series:68 degree ultra wide eyepiece Focal length:9mm Barrel size:1.25" (31.7mm) Eye relief:17mm Apparent field of view:68 degree Lens material:optical glass lenses Body material:fully metal Filter threads:standard 1.25" filter thread Package includes: 1xSVBONY 1.25" ultra wide 15mm eyepiece 2xSVBONY lens cover. This SVBONY red laser collimator has a 1.25" barrel and comes with a 2" adapter. It is suitable for both 1.25" and 2" Newtonian reflector telescopes. When you upgrade your 1.25" telescope to a 2" telescope, you do not need to buy an additional collimator to calibrate the 2" telescope. This is a newest 1.25" laser collimator includes removable 2" adapter;the triple cemented lens to improve the stability of dot;it's designed for accurate collimation of all Newtonian and SCT reflector telescopes. SVBONY Red Laser Collimator is made of all-metal material and has a long service life.