{"product_id":"pentax-eyepiece-xw-16-5","title":"Pentax Eyepiece XW-16.5","description":"\u003cp\u003eAchieves the widest 85° apparent field of view in the XW series\u003c\/p\u003e\u003cp\u003eHigh-performance eyepieces for use with high-grade spotting scope\u003c\/p\u003e\u003cp\u003esmc PENTAX XW series - 70° or 85° Apparent Angle of View, 20mm Eye Relief, plus Weatherproof Body for Multi-Application Viewing\u003c\/p\u003e\u003cp\u003eLong-focal-length eyepieces, ideal for nebula and star cluster observations. XW16.5 are newly added to the smc PENTAX XW-series line up featuring an extra -wide 85-degree apparanet angle of view with an extra-long 20mm eye relief to deliver an exciting wide-perspective image.\u003c\/p\u003e\u003cp\u003eHigh-Grade Optics for Exceptional Image Quality\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003ePENTAX-Original Multi-Layer Coating for Outstanding Light Transmission Efficiency\u003c\/p\u003e\u003cp\u003eAll 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.\u003c\/p\u003e\u003cp\u003eAdvanced Light-Shielding Technology for Improved Image Contrast\u003c\/p\u003e\u003cp\u003eThanks 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.\u003c\/p\u003e\u003cp\u003eComprehensive Lineup to Accommodate All Applications\u003c\/p\u003e\u003cp\u003eFeaturing functional, practical focal lengths, the XW eyepiece series provides a comprehensive lineup that accommodates all types of applications, from low-magnification viewing of stars to high-magnification observation of planets.\u003c\/p\u003e\u003cp\u003eWeatherproof Construction for All-Weather Viewing\u003c\/p\u003e\u003cp\u003eThe XW series features JIS Class 4 weatherproof construction,* making it possible to use it in drizzle or under night dew.\u003c\/p\u003e\u003cp\u003e* The XW-series eyepieces are not designed for underwater use and should not be submerged under water.\u003c\/p\u003e\u003cp\u003eSleeve Size and Eyecup Design\u003c\/p\u003e\u003cp\u003eThe XW series provides a choice of two installment diameters: American-standard 31.7mm version, and 50.8mm (two-inch) version. When you remove the screw-on eyecup, it also provides a screw thread with a 43mm diameter and a 0.75 pitch.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal Length:\u003c\/strong\u003e 16.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLens Construction:\u003c\/strong\u003e 7 Elements 5 Groups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEye Relief:\u003c\/strong\u003e 20mm (12mm - distance from the viewing rubber)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApparent Angle of View:\u003c\/strong\u003e 85°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Multi coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeatherproof:\u003c\/strong\u003e JIS class 4 equivalent (splash-proof)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleeve size:\u003c\/strong\u003e 50.8mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter \u0026amp; Length:\u003c\/strong\u003e 76mm×142mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (+\/- 5%):\u003c\/strong\u003e 745g\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pentax","offers":[{"title":"Default Title","offer_id":54819190178076,"sku":"70540","price":1150.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/0835\/1516\/files\/01XW16.5_3dee8c84-58f4-411a-9f73-1d21bff29c2f.png?v=1793702703","url":"https:\/\/www.magnumsports.com.au\/products\/pentax-eyepiece-xw-16-5","provider":"Magnum Sports","version":"1.0","type":"link"}