SVBONY SV191 Zoom Eyepiece inch Ultra Wide Angle FMC Coating 7 Element Structure for Telescope 7.2-21.6mm 1.25

SV191 ultra-wide angle 1.25" 7.2mm-21.6mm zoom eyepiece adopts high refractive glass, allowing you to change magnification without changing the eyepiece 7-element/4-group lens configuration provides clear, high-contrast perspective Fully coated with anti-reflective coating, the edges of the lens have a matte coating to effectively prevent reflective lines. Achieves maximum contrast and ensures excellent optical performance Extra-long 18mm to 20mm eye relief range allows you to use glasses without reducing the field of view seen through the eyepiece SV191 series zoom eyepiece supports pluggable SV406P series birdwatching field scope for perfect focus Ultra wide angle and convenient to use Made of high refractive index glass, magnification can be changed without changing the eyepiece. SV191 eyepiece belongs to wide-angle zoom eyepiece type. Maximum performance field of view is 65 degrees. Quality Image 7 elements / 4 groups lens configuration allows you to get clear and high contrast perspective Excellent optical performance Fully coated, the edges of the lens have a matte coating, effectively preventing reflection lines. Can achieve maximum contrast, ensuring excellent optical performance Humanized design Ultra-long 18mm-20mm eye relief range not only meets the needs of glasses-wearing users, but also avoids the visual ghosting problem caused by excessively long exit pupil distance Specifications: 1. Brand: SVBONY 2. Model: SV191 3. Focal length: 7.2-21.6mm 4. Eye relief: 18-20mm 5. Apparent field of view: 42°-65° 6. Field stop diameter: 16mm 7. Barrel size: 1.25" 8. Lens structure: 7 pieces/4 pairs 9. Filter thread standard: M28.5*0.6 10. Coating: FMC 11. Black Lens Edge: Yes 12. Eye Cup: Twist Up 13. Eye Cup Material: Metal 14. Net Weight: 167g / 5.87oz / 0.367lb Package Contents: 1x SV191 1.25" Zoom Eyepiece 7.2-21.6mm 2x Rubber Dust Cover 1x Mirror Cloth