{"product_id":"william-optics-ultracat-108-f-4-8-wifd-petzval-apo-refractor-uc108","title":"William Optics UltraCat 108 f\/4.8 WIFD Petzval APO Refractor - T-C-108BR","description":"\u003cp\u003eThe William Optics UltraCat 108 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\u003ch3\u003eKey Features:\u003c\/h3\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\u003cbr\u003e\u003c\/strong\u003eFree customization for direct purchases, adding a personal touch to your telescope.\u003c\/p\u003e\n\u003ch3\u003eUltraCat 108 Specifications...\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLens Type:\u003c\/strong\u003e 5-Element Advanced Petzval\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLens Elements:\u003c\/strong\u003e Two (2) Super ED Glass, One (1) ED Glass, One (1)Lanthanum Glass, One (1) X-Element\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal Length:\u003c\/strong\u003e 518 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLens Diameter:\u003c\/strong\u003e 108 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal Ratio:\u003c\/strong\u003e f\/4.8\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser:\u003c\/strong\u003e WIFD Rack \u0026amp; Pinion, compatible with EAF\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapters Included:\u003c\/strong\u003e Sensor Tilt Corrector, Rotator, M68, M54 \u0026amp; M48 Camera Adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Flattener?\u003c\/strong\u003e No Flattener Required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eT-Mount Supported:\u003c\/strong\u003e Canon EF and RF, Nikon F and Z, Sony E, Pentax K, MTF (M4\/3), Fuji X\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera Format:\u003c\/strong\u003e Medium Format, Full Frame, APS-C, M4\/3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Length (minimum and maximum):\u003c\/strong\u003e 510.5 mm retracted, 588.5 mm extended\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOTA Weight:\u003c\/strong\u003e 7.95kg (17.53 pounds)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":41545445048433,"sku":"WIL-T-C-108BR","price":3552.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Cat-91-WIFD.jpg?v=1776459201","url":"https:\/\/khanscope.com\/en-fr\/products\/william-optics-ultracat-108-f-4-8-wifd-petzval-apo-refractor-uc108","provider":"Khan Scope Centre","version":"1.0","type":"link"}