Tele Vue 31mm Nagler Type 5 Eyepiece


Tele Vue 31mm Nagler Type 5 Eyepiece

With the 31mm, the unique 6-element design using four exotic glasses, maintains the contrast advancement of the Type 4s while achieving a true field area 82% larger than the 22mm Type 4! Owners of fast Dobsonian/Newtonians can enjoy a larger true field, free of secondary shadowing, than ever before. For example, a 12.5", f/4.5 scope with a Paracorr will deliver a 1.5 degree field (3 Moon diameters), at 53x with a 6mm exit pupil. Use our eyepiece calculator to figure out what the 31mm will deliver on your scope.
Focal Length: 31mm Barrel Size: 2"
# Elements/# Groups: 6 / 4
Apparent Field of View: 82 degrees
Eye Relief: 19mm
Weight: 2.20 lbs.

Add to Cart:

  • Model: EN5310
  • Shipping Weight: 3lbs
  • Manufactured by: Tele Vue

This product was added to our catalog on Wednesday 16 January, 2008.