{"id":53654,"date":"2025-07-24T13:20:49","date_gmt":"2025-07-24T11:20:49","guid":{"rendered":"https:\/\/www.ganymedes.nl\/?post_type=product&#038;p=53654"},"modified":"2026-01-01T00:19:43","modified_gmt":"2025-12-31T23:19:43","slug":"william-optics-ultracat-108-refractor-telescoop","status":"publish","type":"product","link":"https:\/\/dev4-ganymedes.nl\/en\/product\/william-optics-ultracat-108-refractor-telescoop\/","title":{"rendered":"William Optics UltraCat 108 refractor telescoop"},"content":{"rendered":"<h3 data-start=\"314\" data-end=\"396\">William Optics Ultracat 108 \u2013 Snelle Petzval voor Astrofotografie op Topniveau<\/h3>\n<p data-start=\"398\" data-end=\"731\">De William Optics Ultracat 108 is een geavanceerde 5-element Petzval-refractor, ontworpen voor astrofotografen die maximale prestaties eisen zonder gedoe met flatteners of correctors. Dankzij het innovatieve optische ontwerp levert deze telescoop een vlak, kleurzuiver beeld over een indrukwekkend beeldveld \u2013 direct uit de doos.<\/p>\n<p data-start=\"733\" data-end=\"1202\">Het objectief heeft een diameter van 108 mm en een brandpuntsafstand van 518 mm, wat resulteert in een snelle f\/4.8 openingsverhouding. De Petzval-constructie bestaat uit vijf zorgvuldig geselecteerde elementen, waaronder twee Super ED-glaselementen, \u00e9\u00e9n ED-element, \u00e9\u00e9n lanthanum-element en het unieke X-Element voor maximale correctie. Hierdoor krijg je een perfect gecorrigeerd en scherp beeld, ideaal voor full-frame en zelfs medium format camera\u2019s.<\/p>\n<p data-start=\"733\" data-end=\"1202\"><a href=\"https:\/\/www.ganymedes.nl\/wp-content\/uploads\/2025\/07\/WO-ultracat108-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-53949 size-vp_sm\" src=\"https:\/\/www.ganymedes.nl\/wp-content\/uploads\/2025\/07\/WO-ultracat108-2-500x316.jpg\" alt=\"\" width=\"500\" height=\"316\" srcset=\"https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/WO-ultracat108-2-500x316.jpg 500w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/WO-ultracat108-2-324x205.jpg 324w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/WO-ultracat108-2-416x263.jpg 416w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/WO-ultracat108-2-300x190.jpg 300w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/WO-ultracat108-2-140x89.jpg 140w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/WO-ultracat108-2.jpg 740w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<p data-start=\"1204\" data-end=\"1403\">De ingebouwde beeldveldcorrectie levert een vlak beeld van 60 mm \u2013 zonder dat een optionele flattener nodig is. Hierdoor is de Ultracat 108 bijzonder gebruiksvriendelijk en effici\u00ebnt in het veld.<\/p>\n<p data-start=\"1405\" data-end=\"1693\">De stevige WIFD rack &amp; pinion focuser is compatibel met de ZWO EAF (elektronische autofocuser) en heeft een focusbereik van 0\u201330 mm. De meegeleverde Sensor Tilt Xterminator en roterende adapters (M68\/M54\/M48) zorgen voor perfecte aansluiting en uitlijning van vrijwel elke camera.<\/p>\n<p data-start=\"1695\" data-end=\"1726\">Technische specificaties:<\/p>\n<ul>\n<li data-start=\"1729\" data-end=\"1761\">Lenssysteem: 5-element Petzval<\/li>\n<li data-start=\"1764\" data-end=\"1818\">Glas: Super ED x2, ED x1, Lanthanum x1, X-Element x1<\/li>\n<li data-start=\"1821\" data-end=\"1839\">Diameter: 108 mm<\/li>\n<li data-start=\"1842\" data-end=\"1869\">Brandpuntsafstand: 518 mm<\/li>\n<li data-start=\"1872\" data-end=\"1888\">F\/ratio: f\/4.8<\/li>\n<li data-start=\"1891\" data-end=\"1920\">Beeldveld: 60 mm vlak beeld<\/li>\n<li data-start=\"1923\" data-end=\"1984\">Focuser: WIFD rack &amp; pinion, EAF-compatibel, 0\u201330 mm bereik<\/li>\n<li data-start=\"1987\" data-end=\"2021\">Lengte buis: 512.9 mm \u2013 617.9 mm<\/li>\n<li data-start=\"2024\" data-end=\"2046\">Gewicht OTA: 7.82 kg<\/li>\n<li data-start=\"2049\" data-end=\"2103\">Cameraformats: Medium format, full frame, APS-C, MFT<\/li>\n<li data-start=\"2106\" data-end=\"2179\">Meegeleverd: Sensor Tilt Xterminator, rotator, adapters (M68, M54, M48)<\/li>\n<li data-start=\"2182\" data-end=\"2259\">T-ring compatibiliteit: Canon EF\/RF, Nikon F\/Z, Sony E, Pentax K, Fuji X, MFT<\/li>\n<\/ul>\n<h3 data-start=\"2261\" data-end=\"2444\">Wat krijg je er bij?<\/h3>\n<ul>\n<li>De UltraCat 108 tube<\/li>\n<li>Bahtinov masker<\/li>\n<li>Adapters voor M48, M54 en M68<\/li>\n<li>Vixen Style mounting plate<\/li>\n<li>Tube rings met handle bar<\/li>\n<li>Opbergtas<\/li>\n<li>Inbussleutel set<\/li>\n<\/ul>\n<h4><a href=\"https:\/\/www.ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-53658 size-vp_lg\" src=\"https:\/\/www.ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-1280x239.png\" alt=\"\" width=\"980\" height=\"183\" srcset=\"https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-1280x239.png 1280w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-324x61.png 324w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-416x78.png 416w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-300x56.png 300w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-1030x193.png 1030w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-768x144.png 768w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-1536x287.png 1536w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-140x26.png 140w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-500x93.png 500w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108-800x150.png 800w, https:\/\/dev4-ganymedes.nl\/wp-content\/uploads\/2025\/07\/whatsinthebox-w-o-ultracat-108.png 1567w\" sizes=\"auto, (max-width: 980px) 100vw, 980px\" \/><\/a><\/h4>\n<h4>Plaats je bestelling online of kom langs in de winkel<\/h4>\n<p>Heb je gevonden wat je zoekt en wil je bijvoorbeeld de William Optics UltraCat 108 telescoop bestellen? Dan doe je dit heel eenvoudig online. Bekijk je deze producten liever in het echt voordat je ze koopt? Ook dat is bij ons mogelijk. Je bent van harte welkom in onze showroom in Amstelveen van maandag tot vrijdag tussen 10.00 en 17.00 uur. Op zaterdag is de showroom ook geopend, maar dan van 10.00 tot 16.30 uur. Voor meer informatie en advies kun je ook telefonisch contact met ons opnemen via <a href=\"tel:0031206412083\">020-6412083<\/a>. We helpen je graag.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>De William Optics Ultracat 108 is een snelle f\/4.8 Petzval-refractor met 108 mm opening, ontworpen voor full-frame en medium format astrofotografie. Vlak beeldveld, geen flattener nodig.<\/p>\n","protected":false},"featured_media":53683,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_vp_format_video_url":"","_vp_image_focal_point":[],"_vp_custom_popup_image":0,"_vp_format_audio_url":"","_vp_custom_thumbnail":0,"_vp_custom_thumbnail_focal_point":[],"_vp_hover_thumbnail":0,"_vp_hover_thumbnail_focal_point":[]},"product_brand":[],"product_cat":[259,244,415,342,242,414],"product_tag":[],"class_list":{"0":"post-53654","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-telescopes-refractor-astrophotography-en","7":"product_cat-telescopes-astrophotography-telescopes-en","8":"product_cat-brands-william-optics-cat-series-en","9":"product_cat-brands-en","10":"product_cat-telescopes-en","11":"product_cat-brands-william-optics-en","13":"first","14":"instock","15":"taxable","16":"shipping-taxable","17":"purchasable","18":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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