{"product_id":"william-optics-wifd-ultra-cat-108-apo","title":"William Optics WIFD Ultra-Cat 108 f\/4.8 APO (T-C-108)","description":"\u003ch1\u003eWilliam Optics WIFD Ultra-Cat 108 f\/4.8 APO \u003c\/h1\u003e\n\u003cp\u003eThe William Optics UltraCat108 is a cutting-edge 108mm apochromatic refractor designed for astrophotographers who demand top-tier performance. Featuring a 5-element advanced Petzval optical design and a fast f\/4.8 focal ratio, it delivers breathtaking edge-to-edge clarity and vivid detail, making it perfect for capturing expansive celestial views. Its robust build, exceptional optics, and innovative features redefine the standard for astrophotography.\u003c\/p\u003e\n\u003ch2\u003eKey Features:\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced 5-Element Petzval Design\u003cbr\u003e\u003c\/strong\u003eEliminates field curvature, providing sharp, flat-field images without requiring additional flatteners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e60mm Superior Image Circle\u003cbr\u003e\u003c\/strong\u003eFully supports full-frame and medium-format cameras for wide-field and detailed astrophotography, outperforming standard 106mm telescopes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eF\/4.8 Fast Optics\u003cbr\u003e\u003c\/strong\u003eOffers exceptional light-gathering capability for vibrant deep-sky photography.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWIFD (William’s Internal Focuser Design)\u003cbr\u003e\u003c\/strong\u003ePatented internal focuser ensures precise, stable, and hassle-free imaging, avoiding balance issues and eliminating vignetting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnti-Shrink Lens Cell Technology\u003cbr\u003e\u003c\/strong\u003eMinimizes thermal expansion and contraction, maintaining perfect optical alignment in any environment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSensor Tilt Corrector\u003cbr\u003e\u003c\/strong\u003eIntegrated and patented design eliminates distortion, optimizing sharpness and detail for professional-level results.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt-In Patented Bahtinov Mask\u003cbr\u003e\u003c\/strong\u003eSimplifies focusing for pinpoint precision, a feature that sets it apart from competitors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePatented Handle Bar Design\u003cbr\u003e\u003c\/strong\u003eCombines ergonomic usability with enhanced portability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePersonalized Laser Engraving - SPECIAL ORDER ONLY : Please Call us\u003cbr\u003e\u003c\/strong\u003eFree customization for direct purchases, adding a personal touch to your telescope.\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"1133\" width=\"1503\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Diagram_UltraCat-108_1.webp?v=1733955726\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"1113\" width=\"1476\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Diagram_UltraCat-108_MTF.webp?v=1733955758\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"1138\" width=\"1509\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Diagram_UltraCat-108_RI.webp?v=1733955813\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable cellpadding=\"0\" cellspacing=\"0\" width=\"604\" border=\"0\" style=\"border-collapse: collapse; width: 454pt;\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"302\" span=\"2\" style=\"mso-width-source: userset; mso-width-alt: 11044; width: 227pt;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 15.0pt;\"\u003e\n\u003ctd height=\"20\" width=\"302\" style=\"height: 15.0pt; width: 227pt;\" class=\"xl65\"\u003eLens Type\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003e5-Element Advanced Petzval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 60.0pt;\"\u003e\n\u003ctd height=\"80\" style=\"height: 60.0pt;\" class=\"xl65\"\u003eLens Elements\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003eSuper ED Glass x2\u003cbr\u003eED Glass x1\u003cbr\u003eLanthanum Glass x1\u003cbr\u003eX-Element x1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\"\u003e\n\u003ctd height=\"20\" style=\"height: 15.0pt;\" class=\"xl65\"\u003eFocal Length\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003e518 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\"\u003e\n\u003ctd height=\"20\" style=\"height: 15.0pt;\" class=\"xl65\"\u003eDiameter\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003e108 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\"\u003e\n\u003ctd height=\"20\" style=\"height: 15.0pt;\" class=\"xl65\"\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\"\u003e\n\u003ctd height=\"20\" style=\"height: 15.0pt;\" class=\"xl65\"\u003eImage circle\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003e60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 30.0pt;\"\u003e\n\u003ctd height=\"40\" style=\"height: 30.0pt;\" class=\"xl65\"\u003eFocuser\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003eWIFD R\u0026amp;P Focuser\u003cbr\u003eCompatible with EAF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 45.0pt;\"\u003e\n\u003ctd height=\"60\" style=\"height: 45.0pt;\" class=\"xl65\"\u003eAdapter Included\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003eSensor Tilt Corrector\u003cbr\u003eRotator\u003cbr\u003eM68, M54, M48 Camera Adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\"\u003e\n\u003ctd height=\"20\" style=\"height: 15.0pt;\" class=\"xl65\"\u003eOptional Flattener\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003eNo Flattener Required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 90.0pt;\"\u003e\n\u003ctd height=\"120\" style=\"height: 90.0pt;\" class=\"xl65\"\u003eT-Mount Supported\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003eCanon EF, RF\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003e\u003cbr\u003eNikon F, Z\u003cbr\u003eSony E\u003cbr\u003ePentax K\u003cbr\u003eMFT (M4\/3) \u003cbr\u003eFUJI X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 60.0pt;\"\u003e\n\u003ctd height=\"80\" style=\"height: 60.0pt;\" class=\"xl65\"\u003eCamera Format\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003eMedium Format\u003cbr\u003eFull Frame\u003cbr\u003eAPS-C\u003cbr\u003eM4\/3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\"\u003e\n\u003ctd height=\"20\" style=\"height: 15.0pt;\" class=\"xl65\"\u003eTube Length\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003e510.5 mm - 588.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\"\u003e\n\u003ctd height=\"20\" style=\"height: 15.0pt;\" class=\"xl65\"\u003eOTA Weight\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003e7.95 kg \/ 17.53 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 15.0pt;\"\u003e\n\u003ctd height=\"20\" style=\"height: 15.0pt;\" class=\"xl65\"\u003eTotal Weight\u003c\/td\u003e\n\u003ctd width=\"302\" style=\"width: 227pt;\" class=\"xl66\"\u003e\u003cspan style=\"font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; text-align: start; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003eN\/A\u003c\/span\u003e\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\u003eUltra-Cat 108 OTA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eTilt Adjuster\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eRotator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eM68, M54, M48 Camera Adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003eWilliam Optics 2-year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":46383074607333,"sku":"WO-T-C-108","price":5517.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Cat-108-1-preorder.webp?v=1733955659","url":"https:\/\/istronomyplus.com\/products\/william-optics-wifd-ultra-cat-108-apo","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}