The 4mm low power svbony eyepiece is a 4 -element premium symmetrical Plössl optical design. Features include blackened lens edges to minimize internal reflection and maximize contrast, multi-layer coating group on each lens surface to maximize light transmission and contrast.
1. Brand: SVBONY
2. Focal Length: 4mm
3. Fully coating group on each lens surface to maximize light transmission and contrast
4. 4-element plossl design, has a approx 48 degree AFOV.
5. Full metal, soft rubber eyeguard
6. The inside of the adapter is fully threaded to minimize reflections
7. Structure of the Optical System: Plossl optical design
8. Thread Pitch: M28.5*0.6 (for standard 1.25 inch filters)
9. Weight: 63g /2.19oz
10. Height: 45mm /1.77inch
11. Apply: watch the scenery, bright celestial observations, nebula and so on
l 1 x SVBONY Plossl 4mm Eyepiece
Sturdy anodized aluminum barrels are threaded for Svbony 1.25 inch filters.