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Tele Vue Nagler 26mm Eyepiece

Tele Vue Nagler 26mm Eyepiece
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Price:  £589.00(Inc. 20% VAT)
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Product Code:  EN5-26.0
Manufacturer:  TeleVue
Eyepiece Type:  Ultra Wide
Field of View:  82 degrees
Barrel Size:  2" Eyepiece

TeleVue


Nagler 82°­ Apparent Field Eyepieces.

This is a somewhat smaller, lighter and more powerful version of the celebrated 31 Nagler Type 5. Why? Because customers such as Tom Dietz, from the Smithsonian, are pests! :-) It weighs about 1.6 lbs and has a field stop diameter of 35mm. It is parfocal with the 17mm Nagler Type 4, making it a nice match in size, weight and convenience.

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:

  • Model #  -  EN5-26.0
  • Focal Length (mm)  -  26
  • Barrel Size (in.)  -  2"
  • Apparent Field of View (deg.)  -  82
  • Eye Relief (mm)  -  16
  • Weight (lb / oz)  -  1.60 / 25.6
  • Field Stop (mm)  -  35

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