7-21mm Continuous Variable Zoom Eyepiece 31.7mm/1.25" with Fliter Thread Astronomical Telescope Accessory for Planet Observation
Description：
Engineered with a precision continuous zoom mechanism, this eyepiece delivers seamless magnification adjustments from 7mm to 21mm, allowing astronomers to effortlessly optimize focal length for lunar craters, planetary details, or deep-sky nebulae. Crafted from aerospace-grade aluminum alloy, the rustproof barrel integrates anti-corrosion nano-coating and oxidation-resistant seals, ensuring decade-long durability in humid or coastal environments.
Feature:
1. Full multilayer coating high quality eyepiece, can zoom to any distance between 7mm to 21mm, choosing best magnification for your subject.
2. For viewing moon, planets, nebulae, star clusters and other heavenly body landscape and astronomy observation, high dispersion, wide field of view, very comfortable.
3. Fine workmanship, suitable for 1.25 inch /31.7mm astronomical telescope.
4. Zoom eyepiece not just eyepiece, high magnification to low magnification, short distance to telescop
Specification:
Item Type: Zoom Eyepiece
Interface Size: Approx. 31.7mm/1.25inch
Material: Aluminum Alloy + Optical Glass
Color: Black,Silver
Focal Lenth: 7-21mm Continuous Zoom
Lens Coating Film: Fully Multi-Coated Green Film
Weight: Approx 168g