Full multilayer coating high quality eyepiece, can zoom to any focal distance between 7mm to 21mm, choosing best magnification for your subject.
Zoom eyepiece not just eyepiece, high magnification to low magnification, short focal distance to telescopic, easy to adjust proportion, very practical.
For viewing moon, planets, nebulae, star clusters and other heavenly body landscape and astronomy observation, high dispersion, wide field of view, very comfortable.
Professional manufacturing, metal body, surface coating, excellent optical performance.
Fine workmanship, suitable for 1.25 inch /31.7mm astronomical telescope.
