Svbony SV135 Zoom Telescope Eyepiece, 1.25'' 7-21mm Zoom Eyepiece

Svbony SV135 Zoom Telescope Eyepiece, 1.25'' 7-21mm Zoom Eyepiece for Telescope, 52 Degree Field of View，FMC 5 Element 3 Group Telescope Lens, Astronomical Observation Telescope Accessories

• Zoom eyepiece telescope; zoom eyepiece is very versatile and much easier than swapping eyepieces around when having a quick look around the night sky
• Compatibility; the SV135 zoom eyepiece compatible with any telescope that accepts 1.25 inch eyepieces; filter thread makes the zoom eyepiece can connect with any filter 1.25in
• Clear and crisp image; FMC film maximize the light transmission and minimizes internal reflection and maximizes contrast; 5 elements in 3 groups structure design delivers crisp and sharp images
• Comfortable viewing experience;13 mm to 14 mm long eye relief and twist up eyeguards provides comfortable long term viewing for people
• Linear zoom eyepiece; change the eyepiece from low to high power in an instant without click stops; zoom smooth and solid

Don’t want to change eyepiece too often for your astronomy telescope? Tired of having too much eyepieces to meet different magnification? Want to find an affordable zoom eyepiece? Svbony SV135 1.25” 7-21mm Zoom Eyepiece is what you are looking for. Product Spots Wide Selection of Focal Lengths Zoom to any focal length between 7mm and 21mm – pick the best magnification for your subject. Fully Multi Coating FMC film maximizes the light transmission and minimizes internal reflection and maximizes contrast. 5 elements in 3 groups structure design delivers crisp and sharp images. Blackened Lens Edge Lens edges is blackened to reduce scattering of stray light and maximize contrast; designed to enhance the functionality and pleasure of using your telescope. Eyeglasses Friendly Twist up rubber eyecup and 13-14mm eye relief provide comfortable long term viewing for people. Specification: Focal Length: 7-21mm Eye Relief: 13-14mm Apparent Field of View: 52°-36° Barrel Size: 1.25inch Lens Structure: 5 -Elements/-3Groups Filter Threads Standard: 1.25″ Filter Thread (M28.5 x 0.6) Coatings: Fully Multi-Coated Blackened Lens Edges: Yes Barrel Safety Recess: Yes Eyecups: Twist-Up Eyecups Material: Metal Net Weight: 95g Package Includes: 1 x SV135 1.25in 7-21mm Zoom Eyepiece 2 x Rubber Dust Cover 1 x Mirror Cloth1x Package Box