Dismiss Notice
New Cookie Policy
On May 24, 2018, we published revised versions of our Terms and Rules and Cookie Policy. Your use of AstronomyConnect.com’s services is subject to these revised terms.

More Views

Explore Scientific 1.25" 68° Series Argon-Purged Waterproof Eyepiece - 16mm

4.8 (6 Reviews) Read Reviews Write Review
Brand Explore Scientific
Part Number EPWP6816-01
Availability available

Product Info

Manufacturer Description

Through computer-optimized design, a careful selection of optical glasses, and enhanced multi-layer deposition coatings, the Explore Scientific 68° Series eyepieces produce long eye-relief and ensure high image-correction, a flat field, and high contrast across the entire image field. An excellent choice for those who make extended visual studies of detail with subtle variations of brightness, and for those who must wear glasses while observing.

With the introduction of the 68° Series, Explore Scientific has made two important improvements in eyepiece manufacture - the first being 15 layer Enhanced Multi-layer Deposition (EMD) coatings on all glass-to-air surfaces to gain maximum contrast, and waterproofing the eyepiece with the use of Argon gas purging instead of standard Nitrogen gas. Although Nitrogen is a fine choice that will last for many years, Argon is a larger molecule that maintains its protective properties over a wider range of temperatures, and is even more resistant to diffusion thereby further extending the protective waterproof environment of the eyepiece body.

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 Scientific's eyepieces are backed with their exclusive Explore STAR Transferrable Extended Life of the Product Warranty. Limited Warranty is one year, which converts to the Explore STAR Transferrable Extended Life of the Product Warranty when product is registered within 60 days of purchase. We think that you will find Explore Scientific eyepieces rank among the finest obtainable and represent an outstanding value.

Reviews

4.8 (Based on 6 Reviews) 100% of reviewers recommended this product.
Rating Distribution
Sort by
  • Date
  • Rating
  • Useful
    1. Dick Gentry

      Dick Gentry New Member

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Dick G.
      1513832005
      Dec 20, 2017

      5.0 very nice ep, really fine price/performance

      Pros:

      Cons:

      Comments:

      This little fella earned a place between a Lunt 20mm HDC 100 degree and a TVEthos 13mm in the big Dob by weight of its performance and a primary spot in rotation in the 115mm refractor too. It also Barlows nicely via TV2x. I like it a lot.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    2. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by James J.
      1512852355
      Dec 9, 2017

      5.0 Explore Scientific 68 degree--16mm

      Pros:

      Cons:

      Comments:

      I had heard a lot good about Explore Scientific eyepieces and have gotten a few in the last year. This is my third, and it is the best so far. The color, contrast, sharpness, etc. are all there with the best eyepieces I have used; but it is the 68 degree apparent field of view that is very natural and relaxing to use. It's not so wide that you have to move your eye around to take it all in, yet it is wide and sharp to the edges. I've used it with Tele Vue refractors and a couple different Celestron SCTs. The performance is superb--regardless of the cost. Taking the cost into account, I'd give it more than a 5 star rating if available.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    3. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by VisObs of Dunedin NZ.
      1409961600
      Sep 5, 2014

      4.0 Probably the best value out there

      Pros:

      Compact,Accurate,Quality Lenses,Strong Construction,Easy to Use

      Cons:

      Comments:

      Shortish eye relief for this particular build is the only reason I give this unit 4 stars not 5. It delivers beautiful wide views at a very reasonable price.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    4. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Golden_man of Russian Federation.
      1403049600
      Jun 17, 2014

      5.0 Best quality and price

      Pros:

      Accurate,Easy to Use,Quality Lenses,Strong Construction

      Cons:

      Comments:

      Realy good wide-angle eyepiece. Construction and materials are best. I use it for observing star clusters and DSO.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    5. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Chuck of Brook Park, Ohio.
      1369958400
      May 30, 2013

      5.0 Explore Scientific Eyepiece

      Pros:

      Quality Lenses,Lightweight,Easy to Use

      Cons:

      None

      Comments:

      Excellent eyepiece and an excellent value.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    6. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by TAS MAN of CAPE CANAVERAL FL.
      1360454400
      Feb 9, 2013

      5.0 REVIEW OF 68 DEGREE 16 MM EYEPIECE

      Pros:

      Cons:

      Comments:

      VERY NICE EYEPIECE, SUPERB CONTRAST. USE IN 5 INCH STELLAR VIEW TELESCOPE. HAS PINPOINT STARS. VERY NICE FIELD OF VIEW. I HAVE ALSO THE 100 DEGREE 9 MM EXPLORE SCEINTIFIC EYEPIECE.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    Sort by
    • Date
    • Rating
    • Useful

      Specifications

      Apparent Field of View 68°
      Barrel Size 1.25" (31.7mm)
      Bolt Case Included Yes - Free Agena Eyepiece Container
      Bolt Case Size Agena 52x80mm
      Coatings EMD (Enhanced Multilayer Deposition) Coatings
      Design 6 Elements; Combination of: Dense Crown, Light Crown, Dense Flint, and Lanthanum Optical Glasses
      End Caps 2
      Eye Relief by Design 11.9mm
      Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6)
      Focal Length 16mm
      Lens Elements 6
      Lens Groups 4
      Parfocal Yes
      Rubber Eye Guard Rubber Folding Type
      Blackened Lens Edges Yes
      Additional Information Body: Anodized Black Aluminum; Laser-Etched Description and Serial Number; Rubber Grip: Internally O-Ring Sealed and Argon Purged

      Barrel: Stainless-Steel, Double Taper, Accepts Standard Filters
      Manufacturer Explore Scientific
      Eyepiece Focal Length 15.1mm - 20mm
      Eyepiece Field of View 61 - 70 degrees
      Eyepiece Series Explore Scientific 68°
      Barrel Type Tapered barrel
      Eyepiece Weight 5.50oz (155.92g)