{"product_id":"masuyama-1-25-ortho-plossl-25-mm-eyepiece-53-mop-2553","title":"Masuyama 1.25\" Ortho Plössl 25 mm Eyepiece 53° (MOP-2553)","description":"\u003ch1\u003eMasuyama 1.25\" Ortho Plössl 25 mm Eyepiece 53°\u003c\/h1\u003e\n\u003cp\u003eThis Masuyama premium planetary eyepiece from Japan offers the best contrast, improved color rendition and better sharpness at the edge.\u003c\/p\u003e\n\u003cp\u003eMasuyama eyepieces are known for their clear and high contrast imaging and velvet black background. \u003cspan\u003e Masuyama eyepieces incorporate a five-element \"hybrid Ortho-Plossl\" design. They have much better performance towards the edge of the field and improved color performance compared to Plossls and other competing designs. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe good contrast of these high-end eyepieces is achieved with a special cut, internal diaphragms and the best possible internal blackening. Due to the elaborate lens design, the eyepieces get by with only 5 elements, with good correction at the same time.\u003c\/p\u003e\n\u003cp\u003eThe eyepieces were developed by renowned optician Dr. Masuyama. Among other things, Dr. Masuyama designed an eyepiece with a focal length of 100 mm, which was used on the historic 60-inch telescope at Mount Wilson Observatory in California. We are pleased to offer you these legendary eyepieces with the latest glass and coating technology.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFocal length 25 mm\u003c\/li\u003e\n\u003cli\u003eApparent field of view 53°\u003c\/li\u003e\n\u003cli\u003eRubber eyecup for comfortable support of the eye or glasses\u003c\/li\u003e\n\u003cli\u003e1.25\" barrel without locking groove, with filter thread\u003c\/li\u003e\n\u003cli\u003e5 elements in 3 groups\u003c\/li\u003e\n\u003cli\u003eLatest lenses and multi-layer coating technology\u003c\/li\u003e\n\u003cli\u003eDeveloped and manufactured by Ohi Kohki Co. in Japan\u003c\/li\u003e\n\u003cli\u003eMade in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications \u003c\/h3\u003e\n\u003ctable class=\"data-table\" style=\"width: 100%; height: 156.75px;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"25%\" style=\"width: 0%;\"\u003e \u003ccol style=\"width: 73.913%;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr class=\"odd\" style=\"height: 39.1875px;\"\u003e\n\u003ctd class=\"spec-name\" style=\"height: 39.1875px;\"\u003eBarrel size \/ Filter thread\u003c\/td\u003e\n\u003ctd class=\"spec-value\" style=\"height: 39.1875px;\"\u003e1 1\/4\" with filterthread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\" style=\"height: 19.5938px;\"\u003e\n\u003ctd class=\"spec-name\" style=\"height: 19.5938px;\"\u003eField of view\u003c\/td\u003e\n\u003ctd class=\"spec-value\" style=\"height: 19.5938px;\"\u003e53°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\" style=\"height: 19.5938px;\"\u003e\n\u003ctd class=\"spec-name\" style=\"height: 19.5938px;\"\u003eEye relief\u003c\/td\u003e\n\u003ctd class=\"spec-value\" style=\"height: 19.5938px;\"\u003e16 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\" style=\"height: 19.5938px;\"\u003e\n\u003ctd class=\"spec-name\" style=\"height: 19.5938px;\"\u003eLenses \/ groups\u003c\/td\u003e\n\u003ctd class=\"spec-value\" style=\"height: 19.5938px;\"\u003e5 \/ 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\" style=\"height: 19.5938px;\"\u003e\n\u003ctd class=\"spec-name\" style=\"height: 19.5938px;\"\u003eFocal length\u003c\/td\u003e\n\u003ctd class=\"spec-value\" style=\"height: 19.5938px;\"\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\" style=\"height: 19.5938px;\"\u003e\n\u003ctd class=\"spec-name\" style=\"height: 19.5938px;\"\u003eDiameter\u003c\/td\u003e\n\u003ctd class=\"spec-value\" style=\"height: 19.5938px;\"\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\" style=\"height: 19.5938px;\"\u003e\n\u003ctd class=\"spec-name\" style=\"height: 19.5938px;\"\u003eHeight\u003c\/td\u003e\n\u003ctd class=\"spec-value\" style=\"height: 19.5938px;\"\u003e77mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEyepiece\u003c\/li\u003e\n\u003cli\u003eLens caps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eMasuyama 1-Year Warranty\u003c\/p\u003e","brand":"Masuyama","offers":[{"title":"Default Title","offer_id":67634705727717,"sku":null,"price":293.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/e-ma-mop-2553-1.webp?v=1791483096","url":"https:\/\/astronomyplus.com\/products\/masuyama-1-25-ortho-plossl-25-mm-eyepiece-53-mop-2553","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}