Brand: Explore Scientific

Explore Scientific 82 Degree Series 11mm Waterproof Eyepiece | EPWP8211-01


Brand: Explore Scientific

Explore Scientific 82 Degree Series 11mm Waterproof Eyepiece | EPWP8211-01


  • 11mm Focal Length
  • 1.25" Diameter Barrel
  • 82° Apparent Field of View
  • Fully EMD Multi-Coated Optics
  • Argon-Filled, Water and Fogproof
  • Slip-Resistant Textured Surface
  • Fold-Down Eyecup
$309.95 CAD

Easy Payment Options with .

$309.95 CAD

Easy Payment Options with .

Free Expert Support
Stress Free, Secure Shopping
30 Day Return Policy
Price Match Promise
Full Details Specifications Reviews and Questions Articles, Videos, Software, Links

Product Description

The 11mm 82° Series Waterproof Argon-Purged Eyepiece is a popular focal length in the upper-medium power magnification class providing both super-wide apparent field and generous eye relief.

It is perfect for any application where more power is desired including observing globular star clusters, planetary nebulae, the bright cloud structure near the nucleus of comets, initial observations of planets, and (with the proper safe filtration on your telescope), observations of active regions of the sun. Use with Explore Scientific Focal Extenders for 2X, 3X, or 5X magnification increases while maintaining the eyepiece native apparent field and eye relief.

Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable enhanced multilayer deposition (EMD) coatings, Explore Scientific 82° Series super wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics. The visual effect of these eyepieces with their long eye-relief and their 82° apparent field is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the “averted vision” technique to study faint details across a huge field-of-view.

Each eyepiece is meticulously assembled into precision machined metal lens barrels that maintain the perfect alignment of the optical train for years of rugged use in the field. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves.

Explore Ultra-Wide Eyepieces - Comfort, Quality, Value. Explore Scientific 82° Series eyepieces, with their 82° apparent field of view, immerses you in a very comfortable ultra-wide field that naturally promotes relaxation at the eyepiece. When you relax your eyes and take in the scene presented before you, it is much easier to observe for longer periods of time, and details begin to materialize that may not have become apparent to you at first glance. Another great benefit of ultra-wide eyepieces is the ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.


Item Number EPWP8211–01
Focal Length 11mm
Length 87mm
Width 48mm
Weight 9.8oz (279g)
Barrel Size 1.25"
Eye Relief 15.6mm
Field Stop Diameter 15.9mm

Customer Reviews

Based on 2 reviews
Great item

Picked this up on a great sale! Been wanting to upgrade from the stock eyepieces that the Dob came with and this nailed it. It's a lot larger than the Plossl, good eye relief as well. Will be purchasing another ES eyepiece in the near future

An amazing medium/high power EP!

This is my third Explore Scientific 82º series eyepiece and it has quickly become my new favourite. The combination of medium/high power and great optical quality offers stunning, crisp, and high-contrast views of the moon and planets. I find there is a slight yellow fringe around very bright objects like the moon but it is very easy to ignore and for me it does not take away from the viewing experience.

All in all, I think it is an amazing eyepiece for the money and I couldn't recommend it more for anyone that is looking to purchase an eyepiece that gets stunning views of the moon and the planets!

Why Should You Trust All Star Telescope?

We've Made All The Mistakes
So You Don't Have To

Learn More