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Pentax

Pentax 70516 SMC-XW 20 1.25-Inch Eyepiece for Telescopes and Pentax Spotting Scopes, black

    • Based on 102 reviews
Condition: New
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Availability: Only 3 left in stock, order soon!
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Arrives Wednesday, Dec 25
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Style: XW-20


Features

  • Improved 70 degree field of view for easier viewing
  • XW 7, 10, 14 , 20 will give a wider field of view than our previous eyepieces when used on Pentax Spotting Scopes or with telescopes
  • XW 14, 20, 30, and 40 are designed specifically provide ideal viewing conditions when used with a telescope
  • Fully multi-coated lenses increase light transmission and color quality
  • High-refraction, low-dispersion lanthanum glass elements deliver bright, high-resolution images with minimal aberrations and distortions

Description

70° Apparent Angle of View, 20mm Eye Relief, plus Weatherproof Body for Multi- Application Viewing Clear, Comfortable Viewing Assured by 70° Apparent Angle of View and 20mm Eye Relief All smc PENTAX XW-series eyepieces feature an extra-wide 70-degree apparent angle of view and an extra-long 20mm eye relief to deliver an exciting, wide-perspective image. High-Grade Optics for Exceptional Image Quality The high-performance XW-series optics incorporates high-refraction, extra-low-dispersion lanthanum glass elements to produce a well-balanced image with minimal aberrations. It is particularly designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil. PENTAX-Original Multi-Layer Coating for Outstanding Light Transmission Efficiency All lens surfaces that come in contact with air are treated with the original multi-layer coating, while all laminated surfaces are treated with the innovative partial coating, to offer the light transmission efficiency of more than 90 percent (an astonishing 96 percent at 550nm) over the visible light spectrum. Advanced Light-Shielding Technology for Improved Image Contrast Thanks to PENTAX’s advanced computer simulation technology, the XW series features a light-shielding diaphragm at the most effective position to drastically reduce internal reflections for a brighter, higher-contrast image. A Choice of Six Magnifications to Meet Specific Applications With six different magnifications (3. 5mm, 5mm, 7mm, 10mm, 14mm and 20mm) to choose from, the XW series accommodates a wide range of both casual and specialized applications. Weatherproof Construction for All-Weather Viewing The XW series features JIS Class 4 weatherproof construction, making it possible to use it in drizzle or under night dew. The XW-series eyepieces are not designed for underwater use and should not be submerged under water. Standard Eyepiece Sleeve and Built-In Adapter-Mounting Screw The XW series features the American-standard 1. 25” tube (31. 7mm) for smooth, easy installation on ANY telescope and/or PENTAX spotting scopes. When the rotatable eyecup is removed, it also offers an optional adapter-mounting screw/thread (43mm in diameter with a 0. 75mm pitch).

Brand: Pentax


Lens Type: Standard


Maximum Focal Length: 20 Millimeters


Minimum Focal Length: 20 Millimeters


Lens Design: Prime


Product Dimensions: 7.3 x 4 x 3.5 inches


Item Weight: 12.5 ounces


Item model number: 70516


Is Discontinued By Manufacturer: No


Date First Available: June 17, 2003


Department: unisex-adult


Manufacturer: Pentax Sport Optics


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Dec 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great Field of view, contrast. tack sharp
Style: XW-40R
I've paired this with a Celestron C9.25 (2800mm focal length, f/10) Good eye relief. I wear glasses and I had zero issues using this with them. I still prefer to view without my glasses, but I use them when I'm sharing the scope with others. Note, this is my first 2" eyepiece, so this might be expected from the (semi) pros, So I will compare this to a pretty decent 40mm 1.25" mounted in the same scope. My experience on different viewings: - M42: Compared to my 1.25" 40mm. Much wider FOV, could see the whole nebula through the eyepiece, old eyepiece contained just the inner portion due to its lower FOV Had zero issues resolving all four stars pin sharp in the trapezoid. the 1.25" 40mm had difficulty resolving the trapezoid - Moon: good viewing night compared to 1.25" 40mm So much brighter, had to put two moon filters on the 2" to view comfortably wide FOV was a bit larger than the moon, so I could see the whole thing good viewing makes it really sharp, kind of like you're standing three feet away from it - Jupiter/Saturn convergence 2020 FOV contained both planets and their moons (on the 22nd, the day after their closest point) Bands of Jupiter had much more contrast with this eyepiece Overall, I'm very happy with this eyepiece. It's now my "first view searcher" eyepiece when zeroing in on a target. It's got good brightness, contrast, and sharpness. ... show more
Reviewed in the United States on December 23, 2020 by Patrick French
    • Top notch
Style: XW-3.5
This is a top quality professional eyepiece. It is hefty, durable, and has excellent clarity. I am using it with my 102mm refractor and it works like a charm.
Reviewed in the United States on September 22, 2023 by Chad Daniel
    • High quality, fully multi-coated, waterproof eyepiece
Style: XW-14
I gave it 5* for it's overall quality and construction. This is much better than a zoom, which comes standard on most scopes. It is fully multi-coated, (the best), has a sharp image with good brightness and light transmission. I do not see any aberration's. It also has good eye relief- 20mm. It is waterproof and fog proof- some other telescopic eyepieces by third parties are not waterproof- read the fine print.This is a perfect match for the Pentax scope 65EDA or 80EDA- buy the body only and then buy a quality eyepiece like this. It is easy to install on a spotting scope or telescope. The XW series is the top line Pentax eyepieces. The XF series is a step down, but also good quality. It was shipped in a very sturdy protective case that you can use to store or transport it in. It weighs approx 12.8 oz, so on a Pentax PF-65EDA scope, the total weight is over 3 pounds. Combined with a Pentax PF-80 EDA, the unit weighs over 4 pounds. I use it for birding and it is great. ... show more
Reviewed in the United States on May 10, 2014 by CowboyBob
    • It looks and feels like a 2"eyepiece
Style: XW-5
Absolutely stunning eyepiece. It is the most high powered eyepiece one can use with Celestron EdgeHD 8 scope. Even at that extreme usable magnification, the Pentax 5mm produces absolutely clear and crisp edge to edge image! The eyepiece is really very big and heavy, the photograph is deceiving. It looks and feels like a 2"eyepiece. Without any hesitation, I can say this is my best eyepiece compared to my other eyepieces from Explore Scientific and Televue. Get one till you get it. I have heard Ricoh has stopped manufacturing them. ... show more
Reviewed in the United States on August 24, 2018 by 3DMicPro
    • Wow what a view!
Style: XW-7
Huge improvement from standard lenses that come with SCT telescope and very sharp image to the edge. Jupiter never looked this good and when I tested it the seeing conditions were average or below average.
Reviewed in the United States on July 13, 2021 by Mr. B
    • Wide field of view
Style: XW-5
Minimal chromatic aberration. Something is not completely okay sometimes field of view is shaded, it depends on eye distance from eyepiece.
Reviewed in the United States on May 23, 2021 by Pal Brlas
    • Pricey, but what a view!
Style: XW-7
Specialty magazines have done the technical reviews - and they're good. I use this on 65mm and 80mms pentax scopes and on my celestron c5 spotter (small cat telescope). There is occasional kidney beaning with higher magnifications (really outside intended ranges) and looking at the moon absolutely requires a filter. But this is all expected. I love this thing! ... show more
Reviewed in the United States on June 14, 2022 by KJ
    • Great Eyepiece.
Style: XW-20
Very nice eyepiece. Perfect for my 5” SCT. I really like the TeleVue Ethos I got, but it’s huge. This eyepiece is just right and great quality.
Reviewed in the United States on March 5, 2021 by John Emerson

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