TeleVue Nagler 16mm Type 5 Eyepiece 1.25“ — 82° AFOV
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Vai al moduloThe TeleVue Nagler 16mm Type 5 is the compact version of the legendary 31mm "king of the field": a 6-element design in a 1.25" barrel offering the widest true field possible for an 82° eyepiece in this format, in a light 201g body.
The widest field available in 1.25" format
To cover the full range of focal lengths at an 82° apparent field, TeleVue uses several distinct optical designs: the Type 5 covers medium-to-long focal lengths (16mm and 31mm), while the Type 6 covers the shorter ones. The 16mm Type 5 replaces the historic 8-element 16mm Nagler Type 2 with a lighter, more compact 6-element design, while preserving the visual impact and sharpness that define the Nagler series.
22.1mm field stop for the widest true field in 1.25"
With a 22.1mm field stop, the 16mm Type 5 offers the widest true field achievable from an 82° eyepiece with a 1.25" barrel, making it ideal for telescopes that only accept this format, for astronomical binoculars (Bino Vue) and for smaller-aperture instruments. Its 10mm eye relief and fold-down rubber eyecup still ensure comfortable viewing for those not wearing glasses.
Construction and compatibility
The 1.25" (31.75mm) barrel features filter threads for standard astronomy filters, a rubber grip and a safety undercut groove. Lens edges are blackened to eliminate stray internal reflections. Like every TeleVue eyepiece, it undergoes a 100% full-field visual inspection before shipping.
Technical specifications
| Product code | EN5-16.0 |
|---|---|
| Series | Nagler Type 5 |
| Focal length | 16 mm |
| Apparent field of view (AFOV) | 82° |
| Eye relief | 10 mm |
| Optical elements | 6 |
| Field stop | 22.1 mm |
| Optical coating | Proprietary TeleVue multi-layer, blackened lens edges |
| Barrel | 1.25" (31.75mm) with filter threads |
| Eyecup | Rubber, fold-down |
| Weight | 201 g |
| Length | 69 mm |
| Made in | USA — TeleVue Optics |