Tele Vue Nagler Type 7 Eyepieces
Concept: The Nagler Type 7 series was developed as a natural extension of TeleVue highly regarded, 85°, limited edition Apollo 11 eyepiece. However, the series can also be thought of as an extension of the long eye relief Nagler Type 4 concept. With the all-new Type 7 design layout, TeleVue achieved their goal of Apollo 11-like performance across a series of focal lengths that are eyeglass friendly.
Design Goals: The design goal was simple. The performance of each of the Type 7 focal lengths must equal or exceed that of the Apollo 11 eyepiece in the areas of full-field sharpness, contrast, distortion correction, eye relief, and pupil comfort, but across an 82° apparent field of view instead of 85°.
If you have been waiting for a Nagler series for eyeglass wearers, the Type 7 is it. Combining the expansive 82° apparent field of view with 19 mm of eyeglass friendly eye relief, and large eyelens, the Nagler Type 7s give a new dimension to the “spacewalk” viewing effect. An easily adjustable, locking eye-guard is included for those who don’t wear eyeglasses. It helps to correctly position your eye to the exit pupil so you don’t get too close to the eyelens, as well as blocks contrast-robbing stray light from interfering with the view. Speaking of which, of course TeleVue have applied all the optical coating and baffling features Tele Vue eyepieces are known for to maximize contrast and compliment the fully corrected field; revealing beautifully natural star colours with pinpoint sharpness.
| Product Code | Focal Length
(mm) | Barrel Size
(") | Apparent Field
of View (°) | Tele Vue
Parfocal Group | Eye Relief
(mm) | Weight
(grams) | Use with
Binoviewer? | DIOPTRX
Compatible? | FoneMate
Compatible? |
| EN7-05.5 | 5.5 | 2 & 1.25 | 82 | B* | 19 | 587 | Y | Y | Y |
| EN7-09.0 | 9 | 2 & 1.25 | 82 | B* | 19 | 547 | Y | Y | Y |
| EN7-14.0 | 14 | 2 | 82 | B* | 19 | 556 | N | Y | Y |
| EN7-19.0 | 19 | 2 | 82 | B* | 19 | 581 | N | Y | Y |
*Type 7s are parfocal when used in 2" mode. Parfocality with other Tele Vue 1.25" eyepieces is achieved when using the ASF-8125 adapter.
The optical layout affords unrivalled parfocality throughout the four focal lengths and even between 11⁄4” and 2” modes when used with the Tele Vue Hi-Hat 11⁄4” to 2” adapter (ASF- 8125). The Type 7 series is also parfocal with all other 11⁄4” Tele Vue eyepieces (except 40 mm Plössl) when those eyepieces are used in the Tele Vue Hi-Hat 11⁄4” to 2” adapter (ASF-8125). Available in focal lengths of 5.5, 9, 14, and 19-mm, the Type 7s complement the 22-mm Type 4 and 31-mm Type 5 as eyeglass friendly Naglers.
Specifications: Tele Vue Nagler Type 7 Eyepieces
| Product Code | Focal Length
(mm) | Barrel Size
(") | Apparent Field
of View (°) | Tele Vue
Parfocal Group | Eye Relief
(mm) | Weight
(grams) | Use with
Binoviewer? | DIOPTRX
Compatible? | FoneMate
Compatible? |
| EN7-05.5 | 5.5 | 2 & 1.25 | 82 | B* | 19 | 587 | Y | Y | Y |
| EN7-09.0 | 9 | 2 & 1.25 | 82 | B* | 19 | 547 | Y | Y | Y |
| EN7-14.0 | 14 | 2 | 82 | B* | 19 | 556 | N | Y | Y |
| EN7-19.0 | 19 | 2 | 82 | B* | 19 | 581 | N | Y | Y |
*Type 7s are parfocal when used in 2" mode. Parfocality with other Tele Vue 1.25" eyepieces is achieved when using the ASF-8125 adapter.
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