SVBONY SV191 Zoom Eyepiece Bundle with SVBONY Telescope Eyepiece 40mm and SVBONY SV215 Zoom Eyepiece

Twist-Up eyecups SV191 7.2-21.6mm zoom eyepiece can meet the needs of most people; including the needs of users who wear glasses. Fully Multi-coated lens SV191 zoom lens optic design increases light transmission, delivers bright, clear, high-contrast images even in low-light conditions. 42°-65° Apparent Field of View SV191 7.2-21.6mm zoom eyepiece allows you to see different wide field of view under the same viewing conditions. Meet your different needs. 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. 2 rubber dust covers Keep your eyepiece lens away from the influence of dust and extend its service life. Specification: Focal Length: 7.2-21.6mm Eye Relief: 18-20mm Apparent Field of View: 42°-65° Field stop diameter: 16mm Barrel Size: 1.25" Lens Structure: 7-Elements/4-Groups Filter Threads Standard: M28.5*0.6 Coatings: Fully Multi-Coated Blackened Lens Edges: Yes Eyecups: Twist-Up Eyecups Material: Metal Net Weight: 167g / 5.87oz / 0.367lb Package Includes: 1X Black 1.25" Zoom Eyepiece 7.2-21.6mm 2X Rubber Dust Cover 1X Mirror Cloth.The SVBONY super 1.25" 40 mm plossl eyepiece engineered with high quality 4 element design and offers a generous 40 degree apparent field of view, perfect for broad field lunar observations;medium sized star clusters;provide a wide range of cloudy nebulas and deep sky targets. The built in rubber eye guard enhances viewing by helping to block out ambient light and position, no introduction of additional color for higher magnification;highly achromatic;enhance the details of planetary filters. Lens edges are blackened to reduce scattering of stray light and maximize contrast.

• One eyepiece for multiple uses; SV191 7.2-21.6mm zoom eyepiece allows you to change magnification power without swapping out eyepieces
• Parfocal design; changing magnification without refocusing
• Engineered with high quality 4 element design and offering a generous 40° apparent field of view; perfect for broad field lunar observations; medium sized star clusters; provide a wide range of cloudy nebulas and deep sky targets
• Soft rubber eye guard that is custom fitted with a bayonet mount and folds down for the convenience of eyeglass wearers and protects glasses from getting scratched
• Click and stops design; there are clicks and stops as you pass through the marked zoom levels; easy to use even in the dark