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Model | SV135 | SV170 | SV171 |
Focal length | 7-21mm | 10-30mm | 8-24mm |
Eye Relief | 18mm - 16.3mm | 17-18.5mm | 18-19.5mm |
Zoon Type | Linear | | |
Lens structure | 6PCS / 4group | 5 -Elements/-3Groups | 7-Elements/4-Groups |
Interpupillary Dist. | 15mm | | |
Barrel Size | 1.25" | 1.25" | 1.25" |
Field of view | 57° ~ 40° | 33°-51° | 38°-56° |
Coatings | Fully Multi-Coated-Green | Fully Multi-Coated | Fully Multi-Coated |
Rubber Eye Guard | Yes | | |
Blackened Lens Edges | | Yes | Yes |
Barrel Safety Recess | | Yes | Yes |
Eyecups Meterial | Metal | Metal | Metal |
Eyecups | | Twist-Up | Twist-Up |
Thread Size | M28.5*0.6 | M28.5 x 0.6 | M28.5 x 0.6 |
Net Weight | 133g / 4.67oz | 198g / 6.98oz / 0.44lb | 300g / 10.58oz / 0.66lb |
Features:
Fully multi-coated Premium eyepiece zooms to any focal length between 7 mm and 21mm
Zoom from low to high power in an instant with this versatile eyepiece
Compatible with any telescope that accepts 1.25î eyepieces
6 -Element 4-Group premium optical design
Comfortable 18mm - 16.3mm eye relief more comfortable, especially for eyeglass wearers
Package Includes:
SVBONY SV135 7-21mm 1.25 inch Eyepiece
Lens Covers (Objective and Eyepiece)
Lens Cleaning Cloth
Features:
SVBONY Super-wide Angle 1.25" 8mm-24mm zoom eyepiece.
The zoom eyepiece allows you to change magnification power without swapping out eyepieces.
7-Elements / 4-groups made of high index glass deliver sharp, high contrast vistas.
A simple twist of the zoom eyepiece housing changes the focal length from 24mm to 8mm, providing a variety of viewing magnification powers.
Exceptionally long 18mm-19.5mm eye relief range allows eyeglass wearers to enjoy the entire field of view without needing to remove their glasses.
Sleek black barrel with safety undercut to reduce the possibility of the eyepiece slipping out of the focuser or diagonal.
Blackened lens edges, anti-reflection threads for maximum contrast.
Package Includes
SV171 Black 1.25in 8-24mm Zoom Eyepiece
Two Rubber Dust Cover
Mirror Cloth
