Celestron 8 - 24mm Zoom Eyepiece with 1-1/4" Mount.

Super-premium 1.25-inch zoom eyepiece Focal length of 8 to 24 millimeters Allows for expanded magnification options 40 to 60 degree field of view, 15 to 18 millimeter eye relief Fully multicoated optics

Whether an expert or novice, a quality zoomeyepiece should be part of anyone?s astronomical observations. This is a 8-24mm Zoom Eyepiece fromCelestron. Featuring a 1-1/4? mount, itaccepts 1.25? filters. As you shortenthe focal length of this Zoom Eyepiece, the apparent field of view increases,increasing the effective magnification with it. Its 15mm eye relief produces a 40-60 degree apparent field of view. Accepts 1.25"filters for astronomical & terrestrial applications 40-60 degree apparent field of view 15mm eye relief Product dimensions: 1.7" x 4.6" Product weight: 0.51 lbs