Celestron 8-24mm 1.25" Zoom Eyepiece for 1 1/4-in Celestron Telescopes. 25" Zoom Eyepiece for 1 1/4-in Telescopes 93230 provides you with amazing views and options while using your telescope. The zoom feature on this Eyepiece from Celestron is perfect for terrestrial as well as astronomical use allowing you the chance to see craters on the Moon the phases of Venus and the Great Red Spot on Jupiter. The Celestron 8-24mm Telescope Eyepiece features premium optics that are fully multi-coated and the folding eyecup lets you view with or without glasses making this an excellent eyepiece for all users. The Celestron 8-24mm Telescope Eyepiece w/ Zoom also features an impressive 40mm to 60mm focal length so you can quickly and easily adapt to more magnifications as your needs grow.