{"product_id":"pentax-eyepiece-xw-23-23mm","title":"Pentax Eyepiece XW-23 23mm","description":"\u003ch2\u003eHigh-performance wide angle eyepieces for ultra clear astronomical viewing - \u003cem\u003e85° Apparent Angle of View\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe PENTAX XW series 85° Apparent Angle combined with 20mm of Eye Relief produces some the widest and most relaxed viewing possible with your telescope. \u003c\/p\u003e\n\u003ch3\u003eHigh-Grade Optics for Exceptional Image Quality\u003cbr\u003e\n\u003c\/h3\u003e\n\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\n\u003ch3\u003ePENTAX-Original Multi-Layer Coating for Outstanding Light Transmission Efficiency\u003c\/h3\u003e\n\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\n\u003ch3\u003eAdvanced Light-Shielding Technology for Improved Image Contrast\u003cbr\u003e\n\u003c\/h3\u003e\n\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\n\u003ch3\u003eSleeve Size and Eyecup Design\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe XW series provides a choice of two diameter to suit practically all telescope fousers: American-standard 31.7mm version (1.25\"), and 50.8mm (2\") version.\u003c\/p\u003e\n\u003cp\u003e 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\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable border=\"1\" style=\"width: 100%; height: 156.75px;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 50%;\"\u003e \u003ccol style=\"width: 50%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eEye Relief\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003e770g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003e23mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eNumber of Components\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003e7 elements in 5 groups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eApparent Field of View\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003e85°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eField of View Diameter\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eΦ17.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003e125mm x 76mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003eMounting Size\u003c\/td\u003e\n\u003ctd style=\"height: 19.5938px;\"\u003e50.8mm  or 2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/figure\u003e","brand":"CR Kennedy","offers":[{"title":"Default Title","offer_id":43979309547589,"sku":"70541","price":1150.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/pentax-eyepiece-xw-23.png?v=1763007083","url":"https:\/\/bintel.com.au\/zh\/products\/pentax-eyepiece-xw-23-23mm","provider":"The Binocular and Telescope Shop","version":"1.0","type":"link"}