SVBONY 1.25-Inch Zoom Eyepiece (7–21 mm) offers variable focal length in a compact, 1.25-inch format for telescopes. The linear zoom provides on-the-fly magnification changes without swapping eyepieces.
Use it for general observing sessions, from wide-field scouting of star fields to detailed planetary views. The smooth zoom operation helps you adjust framing quickly while keeping your eye focused on the target.
- Focal length: 7–21 mm; linear zoom for continuous magnification change.
- Optical design: 6 elements in 4 groups for consistent sharpness across the range.
- Coating: fully multi-coated green optics to improve contrast and light transmission.
- Eye relief: 18 mm–16.3 mm, suitable for eyeglass wearers.
- Field of View: 57° at 7 mm to 40° at 21 mm.
- Tube and compatibility: 1.25-inch barrel; compatible with any telescope that accepts 1.25-inch eyepieces. Thread size M28.5 x 0.6.
Specifications: Length ≈ 93 mm; Weight ≈ 133 g; Pupil spacing 15 mm; Thread size M28.5 × 0.6; Eyepiece tube diameter 1.25 inch.
Fit: Compatible with most 1.25-inch telescope eyepiece sockets and standard accessories.
