There have been zoom eyepieces in the past, but none quite like the Tele Vue 3mm-6mm Nagler Zoom. Since the time of Galileo, short-focal-length (hence high-magnification) eyepieces have been notoriously difficult to look through. That has changed in recent years, especially with the introduction of Tele Vue's line of Radian eyepieces (a 1999 Hot Product). The new Tele Vue zoom is small, lightweight, and offers the same magnifications (with click-stop settings) as four Radians while maintaining a constant focus and 50 degree apparent field. It also lets observers choose in-between focal lengths, thus giving them the ability to tune the magnification to atmospheric conditions, which is very critical for high-power viewing. Although the zoom's 10-millimeter eye relief isn't long enough for eyeglass wearers, it is enough to make this a very comfortable eyepiece to look through. - Sky and and Telescope
Specifications
- 1.25" Barrel
- 50 degree Apparent FOV
- 10mm Eye Relief
- Field Stop of 2.6-5.1 mm
- 5 Elements
- 0.3 Lbs
High contrast 3-6mm planetary zoom. Constant 50 degree field and 10mm eye-relief. Clickstops at 3,4,5,6mm. Unique 8mm to 24mm with click-stops at 8,12,16 and and 24mm. Great for daytime and general use. Great with Bino Vue!
