SVBONY SV230 8-20mm Zoom Eyepiece, Parfocal Design Wide-Angle 57°-72°, Aspherical Optics, 1.25" and 2" Dual Fit for Planetary & Deep Sky Observation

One Eyepiece, Endless Possibilities: Forget eyepiece swapping; SVBONY SV230 8-20mm zoom covers a versatile range; letting you seamlessly go from finding targets to high-power planetary scrutiny without ever breaking your gaze Stay in Focus, Stay on Target: Parfocal design means your target stays sharp while zooming; No more frustrating re-focusing just enjoy continuous; crisp views of Jupiter's bands or the Moon's craters Wider Views, More Immersive Experience: Experience a expanding field of view from 57° to 72° as you zoom out; It's like switching from a standard to a wide-angle lens; keeping objects in view longer and providing a more comfortable; immersive session Sharpness to the Edge with Aspherical Optics: Aspherical lens elements are engineered to combat edge blur and astigmatism common in cheap zooms; enjoy sharp, pinpoint stars across the entire field, not just the center Universal Fit for Aperture of F/4 or Smaller: It natively fits both 1.25-inch and 2-inch focusers (no adapter needed); Compatible with SVBONY; Celestron or Sky-Watcher scopes right out of the box