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Tele Vue Nagler 9mm Eyepiece

Tele Vue Nagler 9mm Eyepiece
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Price:  £272.70
List Price:  £303.00
(Inc. 20% VAT)
+

Product Code:  EN6-09.0
Eyepiece Type:  Ultra Wide
Field of View:  82 degrees
Barrel Size:  1.25" Eyepiece


Nagler Type 6
The 7-element, Nagler Type 6 design is based on the original patented Nagler design. This new 7-element design update for the short focal length Nagler deserves its own designation. Using different exotic materials, coating processes and design ingenuity, Al has massaged more eye-relief, contrast, and true field of view into the shorter focal length Naglers, while maintaining the absolute sharpness of the originals. Eye-relief is 12mm on each model, and all are sized about the same as the original 7mm! Weight about 0.4 to 0.5 lbs.

Concept: The goal we set designing these new eyepieces was to increase contrast, maintain or increase eye-relief, reduce size and weight, and maintain the sharpness of the originals. They are all parfocal and great with the Bino Vue.

Why Are There 3 Types of Naglers?
To achieve the full magnification range over 82°­ apparent field of view requires two types: Nagler Type-5 with focal lengths of 31, 26, 20, 16mm and Nagler Type-6 with focal lengths of 13, 11, 9, 7, 5, 3.5, 2.5mm.

The Type-5 permits the largest true field possible (31mm has 42mm field stop), while the shorter focal length Type-6 models are parfocal, with similiar size and weight and all with a comfortable 12mm eye relief.

The Type-4 models feature about 18mm of eye relief and with the "instajust" eyeguard are best for eyeglass wearers or Dioptrx users in their 22, 17, 12mm focal length range.

Specifications:

  • Focal Length (mm)  -  9
  • Barrel Size (in.)  -  1.25"
  • Apparent Field of View (deg.)  -  82
  • Eye Relief (mm)  -  12
  • Weight (lb / oz)  -  0.42 / 6.7
  • Field Stop (mm)  -  12.4

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