TeleVue Nagler 22mm Type 4 Eyepiece 2“ — 82° AFOV
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Vai al moduloThe TeleVue Nagler 22mm Type 4 opens the door to the widest true field possible in the entire Nagler line: a 6-element design in a 2" barrel, an 82° apparent field of view and a generous 19mm of eye relief, designed for deep-sky observing at low-to-medium power even on very fast telescopes.
Al Nagler's "spacewalk", now with more eye relief
Like the whole Nagler series, the Type 4 aims to recreate the feeling of floating in space thanks to its 82° AFOV. Drawing on experience gained from developing the Radian series, TeleVue achieved more contrast, reduced pincushion distortion, a wider true field and significantly more generous eye relief than the classic Naglers with the Type 4 — features that make it particularly suited to eyeglass wearers.
"Instadjust" click-stop eyecup
The Type 4 introduces the distinctive "Instadjust" click-stop adjustable eyecup: rotating it raises or lowers its height to find the ideal eye-to-lens distance, preserving the full 82° field even when wearing glasses. The 6-element design with a 31.1mm field stop, proprietary multi-layer coatings and blackened lens edges delivers maximum contrast even at fast focal ratios, down to f/4.
2" barrel with filter threads
The 2" (50.8mm) barrel features filter threads for standard astronomy filters, a rubber grip and a safety undercut groove. It's also compatible with the Dioptrx astigmatism-correction system (adapter sold separately). Like every Nagler, each unit undergoes a 100% full-field visual inspection before shipping.
Technical specifications
| Product code | EN4-22.0 |
|---|---|
| Series | Nagler Type 4 |
| Focal length | 22 mm |
| Apparent field of view (AFOV) | 82° |
| Eye relief | 19 mm |
| Optical elements | 6 |
| Field stop | 31.1 mm |
| Optical coating | Proprietary TeleVue multi-layer, blackened lens edges |
| Barrel | 2" (50.8mm) with filter threads |
| Eyecup | Adjustable "Instadjust" click-stop |
| Dioptrx compatible | Yes (adapter sold separately) |
| Weight | 680 g |
| Length | 99 mm |
| Made in | USA — TeleVue Optics |