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Pentax SMC XW 10mm Wide Angle Eyepiece (1.25") - 39x w/ 65mm, 50x w/ 80mm, & 63x w/ 100mm Pentax Scopes

B&H # PEEP10X Mfr # 70514
In Stock
Free Expedited Shipping
You Pay: $271.00
Product Highlights
  • 70° Apparent Field of View
  • 20mm Eye Relief
  • Waterproof & Fogproof
  • Fits Pentax Spotting Scopes

Pentax premium spotting scopes adhere to the American standard of 1.25" eyepiece thread diameter, facilitating the use of eyepieces from independent manufacturers. That also means, of course, that the wonderful Pentax eyepieces can be used in other telescopes and spotting scopes which accept 1.25" eyepieces.

Pentax eyepieces are a near consensus choice amongst serious amateur and professional astronomers as the best that's out there, quite an accomplishment indeed given the fervent passion of the collective.

The XW line represents an even further improvement upon the venerable XL series. The apparent field of view has been expanded to a whopping 70°, but remarkably this was achieved without reducing their impressive eye relief of 20mm. There are eyepieces available with wider apparent viewing fields, but to take advantage of that wider field you'll have to be much closer to the eyepiece. This isn't exactly conducive to extended observing sessions. Additionally, there are lesser eyepieces with similar claims of 70° apparent viewing fields, but the performance upon the edge of these eyepieces isn't on par with the Pentaxes. If you're using a telescope with a fast aperture, this is of particular importance.

These are large and expensive eyepieces, but that's the price to pay for such an enviable combination of viewing field and eye relief. Buy the best once, and you'll still be enjoying the quality long after you've forgotten the price. Should you ever need to painfully part with your purchase, the best always has the most liquidity on the used market because they're rarely ever offered.

Continuous helicoid eyecup design gives perfect eye relief for all
Accepts conventional 1.25" diameter filters for astronomical and terrestrial applications
Perfect for digiscoping when combined with PF-DS1 adapter(and appropriate Pentax Optio digital camera)
Magnification 50x with the PF-80ED
52x with the PF-80ED-A
63x with the PF-100ED
Angle of View 1.4° with the PF-80ED & PF-80ED-A
1.1° with the PF-100ED
Field-of-View (@ 1000 Yds) 74' (24 m at 1000 m) with the PF-80ED & PF-80ED-A
58' (19 m at 1000 m) with the PF-100ED
Exit Pupil Diameter 1.6mm
Eye Relief 20mm
Relative Brightness 2.6
Twilight Factor 63.2 with the PF-80ED & PF-80ED-A
79.3 with the PF-100ED
Weatherproofing Waterproof & fogproof
Dimensions 2.4 x 4.3" (61 x 109mm) WxH
Weight 0.86 lb (390 g)
Pentax SMC XW 10mm Wide Angle Eyepiece (1.25") - 39x w/ 65mm, 50x w/ 80mm, & 63x w/ 100mm Pentax Scopes
  • Push-On Front & Rear Caps
  • Plastic Helicoid Case
  • Limited Lifetime Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    SMC XW 10mm Wide Angle Eyepiece (1.25") - 39x w/ 65mm, 50x w/ 80mm, & 63x w/ 100mm Pentax Scopes
     
    5.0

    (based on 5 reviews)

    Ratings Distribution

    • 5 Stars

       

      (5)

    • 4 Stars

       

      (0)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Great optics (4)
    • Strong construction (3)

    Cons

      Best Uses

      • Astronomy (3)
      • Terrestrial viewing (3)
        • Was this a gift?:
        • No (5)

      Reviewed by 5 customers

      Sort by

      Displaying reviews 1-5

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      5.0

      Outstanding!

      By no-one

      from Taxachusetts

      About Me Avid Adventurer

      Verified Buyer

      Pros

      • Great Optics
      • Strong Construction

      Cons

        Best Uses

        • Range Spotting Scope

        Comments about SMC XW 10mm Wide Angle Eyepiece (1.25") - 39x w/ 65mm, 50x w/ 80mm, & 63x w/ 100mm Pentax Scopes:

        Crisp, clear view, excellent eye relief. Replaced the zoom on my spotting scope with this eyepiece. Easily resolve .223 bullet holes at 300 yards.

        • Was this a gift?:
        • No

        Share this review

        (1 of 1 customers found this review helpful)

         
        5.0

        Amazing contrast razor sharp views and i

        By Blakout

        from Australia

        About Me Professional Guide

        Verified Buyer

        Pros

        • Great Optics

        Cons

        • None

        Best Uses

        • Astronomy
        • Astrophotography
        • Terrestrial Viewing

        Comments about SMC XW 10mm Wide Angle Eyepiece (1.25") - 39x w/ 65mm, 50x w/ 80mm, & 63x w/ 100mm Pentax Scopes:

        Fantastic piece of equipment , what more can you say it's Pentax , simpler the best

        • Was this a gift?:
        • No

        Share this review

        (1 of 1 customers found this review helpful)

         
        5.0

        Superior eyepiece

        By WJ

        from USA

        About Me Casual/ Recreational

        Verified Buyer

        Pros

        • Easy To Use
        • Great Optics
        • Strong Construction

        Cons

        • Heavy

        Best Uses

        • Astronomy
        • Terrestrial Viewing

        Comments about SMC XW 10mm Wide Angle Eyepiece (1.25") - 39x w/ 65mm, 50x w/ 80mm, & 63x w/ 100mm Pentax Scopes:

        I have now a 20mm and 10mm eyepiece for my Pentax spotting scope, and thus have a 20X and 39X power view. The XW series of eyepieces from Pentax are simply the finest eyepieces you can buy for spotting scopes, period. I've compared them side-by-side with eyepieces costing from 50% to 100% more, and they actually come out ahead. The wide view, and generous eye relief will delight those wearing eyeglasses. You feel like you're "in the view" and not looking down a tunnel.

        • Was this a gift?:
        • No

        Share this review

        (1 of 1 customers found this review helpful)

         
        5.0

        Very high quality eyepiece

        By Musef

        from New Jersey

        About Me Casual/ Recreational

        Verified Buyer

        Pros

        • Easy To Use
        • Great Optics

        Cons

        • Bulky

        Best Uses

        • Shooting
        • Terrestrial Viewing

        Comments about SMC XW 10mm Wide Angle Eyepiece (1.25") - 39x w/ 65mm, 50x w/ 80mm, & 63x w/ 100mm Pentax Scopes:

        Overall the view angle is terrific and the magnification is just what I was looking for (39x in 65mm Pentax Spotter). A tad bit large but still balances well on the tripod. The screw up adjustable cap really helps with accommodating to the proper eye relief distance, whether wearing glasses or not, it was perfect both ways.

        • Was this a gift?:
        • No

        Share this review

        (3 of 4 customers found this review helpful)

         
        5.0

        It just doesn't get any better.

        By KS1U

        from Quaker Hill, CT

        Verified Buyer

        Pros

        • Pure crystal clear views
        • Quality Lenses
        • Strong Construction

        Cons

        • May be too large in BV

        Best Uses

        • Astronomy
        • Bird Watching

        Comments about SMC XW 10mm Wide Angle Eyepiece (1.25") - 39x w/ 65mm, 50x w/ 80mm, & 63x w/ 100mm Pentax Scopes:

        While I will focus (excuse the pun) on the Pentax 10mm XW, obviously anyone considering this EP will also be looking at others such as Naglers and Ethos. To be candid, once you reach this level of performance the differences which come in to play are personal preferences and the specific telescopes used with the EP. I am primarily a binoviewer (Denk II with Power X switch) visual astronomer and am currently using a TEC 140 refractor. I have owned many scopes and eyepieces and presently own a pair of Televue 24mm Panotptics and a pair of these 10mm Pentax XW. If you are using the Pentax with a binoviewer you must be certain your nose is not too large or you will then have to partially disassemble the EP to get the proper interpupillary spacing. I did not find this necessary, but some will. This can be as simple as removing the plastic shades or with moderate effort by removing the outer cylinder and rubber coating. As far as the optics are concerned, you really can't do any better. If you want more filed of view then the Ethos will give that one advantage.
        I no longer own the Ethos because the 2 inch skirts interfere with the proper locking of the eyepieces in the Denk II diopters. The light throughput on the Pentax is second to none and the color seems somewhat purer to my eyes. With the Naglers there is a slight, though not objectionable, yellowing of the objects. This has been described by others as a "warmer" view. I prefer the pure white views the Pentax delivers although the Naglers being more diminutive fit nicely in any binoviewer with no issues. In the TEC 140 and using the Power X switch, the Pentax gives about 130X, 200X, and 300X magnifications. There is practically no difference in these 3 eyepieces I've mentioned as far as kidney beaning and pincushion distortion. The distortions are minimal in all three. The nice thing about buying high end eyepieces is if you decide you want something else, there is always a demand for them on the used market. If you start with a moderate or inexpensive eyepiece, you'll end up losing most of the original value in a resale. Regardless of the scope you have, if you want the very best view possible you'll want a high end eyepiece. The weight and feel of this Pentax immediately conveys quality. One look through a nice scope using the 10mm XW will tell you why so many people will plop down the money they do for these. I looked at Jupiter the other night at 130X through the 10mm XW and saw nice detail in the cloud belts and a sharp black dot on the surface from a transiting moon. The visible moons were not simply pinpoints, but sharply defined discs. Granted the TEC 140 is one of the premier refractors available, but the Pentax really enables the scope to do what it is designed to without limitation. If your standards are high and you want the very best views possible you can't go wrong with this eyepiece.

        • Was this a gift?:
        • No

        Share this review

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