1.25” zoom 7-21mm eyepiece
Multicoated Optics - Threaded barrale for filters - Eye Relief
Fully multicoated optics, a flip down rubber eye-guard, and 1.25” threaded barrel for filters. With an eye relief of 18-24mm and an actual field of view (35°-52°) this is a true all-in-one accessory.
Zoom eyepieces have a number of advantages when compared to fixed focal length eyepieces. A single zoom eyepiece could replace a collection of conventional eyepieces making it considerably easier to locate and then zoom-in to your target.
zoom eyepieces offer good contrast and are suitable for both astronomical the terrestrial observation. For the ultimate in contrast fixed focal length eyepieces will offer better contrast.