{"product_id":"william-optics-pleiades-181-apo-f-5-5-wifd-t-p-181rd","title":"William Optics Pleiades 181 APO F\/5.5 WIFD (T-P-181RD)","description":"\u003ch2\u003eWilliam Optics Pleiades 181 APO F\/5.5 WIFD\u003c\/h2\u003e\n\u003cp\u003eElevate your stargazing and astrophotography experience with the newly launched Pleiades 181 by William Optics, a masterpiece exclusively designed for imaging with medium format cameras. This state-of-the-art telescope boasts a substantial 181mm diameter and a 998mm focal length, encapsulated in a sleek, robust design with a 3.7” R\u0026amp;P focuser for precise control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-Performance Optics: The Pleiades 181 features a seven-element, temperature-compensated lens system, ensuring minimal thermal distortion and a Strehl ratio minimum of 0.96 for sharp, clear images across a greater than 55mm image circle.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesigned for Medium Format Cameras: Engineered specifically for medium format imaging, the Pleiades 181 is versatile in accommodating a variety of cameras. It comes equipped with three adapters for cameras with 48mm, 54mm, and 68mm threads, ensuring seamless compatibility and expansive celestial scene capture with unmatched clarity and color accuracy. This makes it an ideal choice for serious astrophotographers.\u003cbr\u003eUnique Cosmos Steering Wheel: A pioneering addition, the Cosmos Steering Wheel allows for effortless handling, rotating, and precise positioning of the telescope, enhancing both comfort and functional ease during prolonged observation sessions.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDurable and Portable: Despite its large aperture, the Pleiades 181 remains relatively portable with a weight of 33.07 lbs (OTA only) and 41.23 lbs fully equipped with ring, dovetail, and saddle. The retracted and extended lengths are 1231mm and 1496mm respectively, with a dew shield diameter of φ230mm.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose Pleiades 181?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned with the specific needs of advanced astrophotographers in mind, the Pleiades 181 is not just a telescope, but a dedicated imaging gateway to exploring the cosmos with exceptional detail and depth. Whether you are capturing distant galaxies or the intricate patterns of nebulae, the Pleiades 181 brings the universe closer to you with unparalleled precision.\u003c\/p\u003e\n\u003cp\u003eExplore the heavens with precision and elegance with the new Pleiades 181 from William Optics, where innovation meets the art of celestial imaging.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--\u003e\u003c\/style\u003e\n\u003ctable data-sheets-baot=\"1\" data-sheets-root=\"1\" style=\"table-layout: fixed; font-size: 10pt; font-family: Arial; width: 0px; border-collapse: collapse; border: none;\" border=\"1\" dir=\"ltr\" cellpadding=\"0\" cellspacing=\"0\" xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"489\"\u003e \u003ccol width=\"100\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eLens Type:\u003c\/td\u003e\n\u003ctd style=\"border-right: 1px solid transparent; overflow: visible; padding: 2px 0px 2px 0px; vertical-align: bottom;\"\u003e\n\u003cdiv style=\"white-space: nowrap; overflow: hidden; position: relative; width: 398px; left: 3px;\"\u003e\n\u003cdiv style=\"float: left;\"\u003e7 Elements Astrograph Design (Contain 3 Super ED)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eFocal Length:\u003c\/td\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom;\"\u003e998 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eDiameter:\u003c\/td\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-family: Arial; font-weight: normal;\"\u003e181 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eAperture:\u003c\/td\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-family: Arial; font-weight: normal;\"\u003ef\/5.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eImage circle:\u003c\/td\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom;\"\u003e55 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eFocuser WO:\u003c\/td\u003e\n\u003ctd style=\"border-right: 1px solid transparent; overflow: visible; padding: 2px 0px 2px 0px; vertical-align: bottom; font-family: Arial; font-weight: normal;\"\u003e\n\u003cdiv style=\"white-space: nowrap; overflow: hidden; position: relative; width: 196px; left: 3px;\"\u003e\n\u003cdiv style=\"float: left;\"\u003e3.7” R\u0026amp;P Focuser\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eAdapter Included:\u003c\/td\u003e\n\u003ctd style=\"border-right: 1px solid transparent; overflow: visible; padding: 2px 0px 2px 0px; vertical-align: bottom; font-family: Arial; font-weight: normal;\"\u003e\n\u003cdiv style=\"white-space: nowrap; overflow: hidden; position: relative; width: 398px; left: 3px;\"\u003e\n\u003cdiv style=\"float: left;\"\u003eTilt Adjuster Rotator M68 , M54 , M48 Camera Adapters\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eOptional Flattener:\u003c\/td\u003e\n\u003ctd style=\"border-right: 1px solid transparent; overflow: visible; padding: 2px 0px 2px 0px; vertical-align: bottom;\"\u003e\n\u003cdiv style=\"white-space: nowrap; overflow: hidden; position: relative; width: 196px; left: 3px;\"\u003e\n\u003cdiv style=\"float: left;\"\u003eNo Flattener Required\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eT-rings Supported:\u003c\/td\u003e\n\u003ctd style=\"border-right: 1px solid transparent; overflow: visible; padding: 2px 0px 2px 0px; vertical-align: bottom; font-family: Arial; font-weight: normal;\"\u003e\n\u003cdiv style=\"white-space: nowrap; overflow: hidden; position: relative; width: 398px; left: 3px;\"\u003e\n\u003cdiv style=\"float: left;\"\u003eCanon EF, RF Nikon F, Z Sony E Pentax K MFT (M4\/3) FUJI X\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eCamera Format:\u003c\/td\u003e\n\u003ctd style=\"border-right: 1px solid transparent; overflow: visible; padding: 2px 0px 2px 0px; vertical-align: bottom; font-family: Arial; font-weight: normal;\"\u003e\n\u003cdiv style=\"white-space: nowrap; overflow: hidden; position: relative; width: 196px; left: 3px;\"\u003e\n\u003cdiv style=\"float: left;\"\u003eMedium Format Cameras\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eTube Length:\u003c\/td\u003e\n\u003ctd style=\"border-right: 1px solid transparent; overflow: visible; padding: 2px 0px 2px 0px; vertical-align: bottom;\"\u003e\n\u003cdiv style=\"white-space: nowrap; overflow: hidden; position: relative; width: 196px; left: 3px;\"\u003e\n\u003cdiv style=\"float: left;\"\u003e1231 mm - 1496 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eOTA Weight:\u003c\/td\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-family: Arial; font-weight: normal;\"\u003e15 kg \/ 33.07 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21px;\"\u003e\n\u003ctd style=\"overflow: hidden; padding: 2px 3px 2px 3px; vertical-align: bottom; font-weight: bold;\"\u003eTotal Weight:\u003c\/td\u003e\n\u003ctd style=\"border-right: 1px solid transparent; overflow: visible; padding: 2px 0px 2px 0px; vertical-align: bottom; font-family: Arial; font-weight: normal;\"\u003e\n\u003cdiv style=\"white-space: nowrap; overflow: hidden; position: relative; width: 196px; left: 3px;\"\u003e\n\u003cdiv style=\"float: left;\"\u003e18.7 kg \/ 41.23 lbs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWilliam Optics Pleiades 181 APO F\/5.5 WIFD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIncluded Items needs to be confirmed.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWilliam Optics 2-Year Warranty\u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Blue","offer_id":45928623276261,"sku":"WO-T-P-181RD-1","price":27597.0,"currency_code":"CAD","in_stock":true},{"title":"Red","offer_id":45928623309029,"sku":"WO-T-P-181RD-2","price":27597.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/William-Optics-Pleiades-181-APO-F5-5-WIFD-T-P-181RD-1.webp?v=1722011166","url":"https:\/\/istronomyplus.com\/products\/william-optics-pleiades-181-apo-f-5-5-wifd-t-p-181rd","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}