Zoom eyepieces often have the reputation of not having particularly good imaging performance. Al Nagler has proven once again that there is another way.

The Nagler zoom offers the best possible imaging quality and keeps up with the best planetary eyepieces in direct comparison. And compared to the Ortho's it offers four focal lengths, a wider field of view and a much more comfortable viewing experience.

The design of the Nagler-Zooms consists of only 5 lenses in 3 groups, that is 6 glass-air surfaces. This is no more than with average fixed focal length eyepieces.

Another special feature of the Nagler Zooms is that the apparent field of view does not change when zooming through the focal length range. So if you zoom from 3 mm to 6 mm you actually have a field of view four times as large.

The focal length range of 3-6 mm is of course extreme. But for those who need this focal length range, the eyepiece might replace a whole set of eyepieces with "exotic" short focal lengths and is then in total even much cheaper.

But the special added value of the eyepiece is that you can adjust the focal length to the respective conditions. If a 4.0 mm is too little and a 3 mm eyepiece is too much, then perhaps it is the Nagler zoom at any intermediate position.

Scope of delivery:

• Zoom Eyepiece