{"id":107792,"date":"2026-04-29T20:02:28","date_gmt":"2026-04-29T18:02:28","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=107792"},"modified":"2026-07-18T13:50:41","modified_gmt":"2026-07-18T11:50:41","slug":"televue-np-101is-101-540-apochromatic-refractor","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/televue-np-101is-101-540-apochromat-refractor\/","title":{"rendered":"TeleVue NP-101is \u2013 101\/540 Apochromatic Refractor"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>Nagler-Petzval: vlak veld zonder flattener<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>TeleVue NP-101is<\/strong> is een premium apochromaat voor veeleisende astrofotografen en ervaren waarnemers. Het Nagler-Petzval ontwerp met vier lenzen in twee ED-groepen levert op 101 mm opening en 540 mm brandpunt (f\/5,3) een vlak, vrijwel volledig kleurfoutvrij beeldveld, zonder losse field flattener.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" data-id=\"107800\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Apochromatische-refractor-AP-101-540-NP-101is-Imaging-System-OTA-3.jpg\" alt=\"TeleVue NP-101is apochromatische refractor, totaalbeeld\" class=\"wp-image-107800\" title=\"\" srcset=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Apochromatische-refractor-AP-101-540-NP-101is-Imaging-System-OTA-3.jpg 800w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Apochromatische-refractor-AP-101-540-NP-101is-Imaging-System-OTA-3-300x300.jpg 300w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Apochromatische-refractor-AP-101-540-NP-101is-Imaging-System-OTA-3-150x150.jpg 150w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Apochromatische-refractor-AP-101-540-NP-101is-Imaging-System-OTA-3-768x768.jpg 768w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Apochromatische-refractor-AP-101-540-NP-101is-Imaging-System-OTA-3-12x12.jpg 12w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Apochromatische-refractor-AP-101-540-NP-101is-Imaging-System-OTA-3-441x441.jpg 441w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Apochromatische-refractor-AP-101-540-NP-101is-Imaging-System-OTA-3-100x100.jpg 100w, https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Apochromatische-refractor-AP-101-540-NP-101is-Imaging-System-OTA-3-64x64.jpg 64w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n<\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Imaging System-uitvoering<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Dit is de fotografisch geoptimaliseerde is-versie: de hoogwaardige focuser met fijne aandrijving is voorbereid op motorisatie, voor de scherpstelnauwkeurigheid die hoge-resolutie fotografie vraagt. Sterren blijven scherp tot aan de rand, ook op grotere sensoren. Visueel levert de buis haarscherpe beelden van Maan en planeten en brede, contrastrijke sterrenvelden. Realistisch zinvol is tot ongeveer 200x.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>In the box<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Optische buis NP-101is 101\/540 Nagler-Petzval quadruplet<\/li>\n\n\n\n<li>Imaging System-focuser, voorbereid op motorisatie<\/li>\n\n\n\n<li>Tube Rings<\/li>\n\n\n\n<li>Transport case<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Featured accessories<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.telescoop.nl\/en\/telescope-accessories\/astro-photography\/other-astrophotography-accessories\/\">TeleVue PMT-4201 T-Ring adapter<\/a> (99 euro) koppelt je camera direct aan de Imaging System-achterzijde.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">For whom yes, for whom no<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Wel: astrofotografen die een gecorrigeerd Petzval-veld met TeleVue-mechaniek willen, ook uitstekend visueel. Niet: wie maximale opening zoekt; de NP127is levert hetzelfde concept met 127 mm.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Specifications<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Optical design<\/td><td>Nagler-Petzval quadruplet, twee ED-groepen<\/td><\/tr><tr><td>Opening<\/td><td>101 mm<\/td><\/tr><tr><td>Focal length<\/td><td>540 mm<\/td><\/tr><tr><td>Opening ratio<\/td><td>f\/5.3<\/td><\/tr><tr><td>Focuser<\/td><td>Imaging System, voorbereid op motorisatie<\/td><\/tr><tr><td>Field of view<\/td><td>Vlak, zonder losse flattener<\/td><\/tr><tr><td>Execution<\/td><td>OTA (loose tube)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Twijfel je over de juiste buis voor jouw gebruik? De <a href=\"https:\/\/www.telescoop.nl\/en\/telescope-selection-aid\/\">telescope selection aid<\/a> helps you choose. Also view all <a href=\"https:\/\/www.telescoop.nl\/en\/telescopes\/refracting-telescopes\/\">Refracting telescopes<\/a> and the full range of <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/televue\/\">TeleVue<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>TeleVue NP-101is: Nagler-Petzval quadruplet 101\/540 f\/5,3 met vlak beeldveld zonder flattener en motoriseerbare Imaging System-focuser. Geleverd met buisringen en transportkoffer.<\/p>","protected":false},"featured_media":107800,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1551],"product_cat":[51,428,531,3175,567],"product_tag":[],"class_list":["post-107792","product","type-product","status-publish","has-post-thumbnail","product_brand-televue","product_cat-telescopen","product_cat-telescopen-voor-astrofotografie","product_cat-gevorderd","product_cat-refractor-ota","product_cat-refractor-telescopen","product_shipping_class-licht","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":107713,"url":"https:\/\/www.telescoop.nl\/en\/televue-reducer-0-8x-npr-focal-reducer\/","url_meta":{"origin":107792,"position":0},"title":"TeleVue Reducer 0.8x NPR \u2013 Focal Reducer","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"NPR 0,8x reducer voor de fotografische TeleVue NP101is en NP127is refractors.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"TeleVue Reducer 0.8x NPR close-up van de frontlens en zwarte behuizing van de TeleVue Imaging System 0.8x reducer voor Nagler-Petzval telescopen","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Reducer-0-8x-NPR-3.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Reducer-0-8x-NPR-3.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Reducer-0-8x-NPR-3.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/04\/TeleVue-Reducer-0-8x-NPR-3.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":33684,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-ap-71-350-71-apochromatische-refractor-redcat-ota\/","url_meta":{"origin":107792,"position":1},"title":"William Optics AP 71\/350 71 Apochromatic Refractor RedCat OTA","author":"","date":"14-11-2025","format":false,"excerpt":"William Optics RedCat 71: Petzval-apochromaat 71\/350 f\/4,9 met vlak beeld tot full-frame. Geleverd met Bahtinov-masker in de objectiefdop, Vixen\/Arca-zwaluwstaart en draagtas.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-71-350-71-Apochromatische-refractor-RedCat-OTA-14.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":107778,"url":"https:\/\/www.telescoop.nl\/en\/televue-tvnp127is-127-660-apochromat-refractor\/","url_meta":{"origin":107792,"position":2},"title":"TeleVue TVNP127is \u2013 127\/660 Apochromatic Refractor","author":"Abdullah Ibrar","date":"29-04-2026","format":false,"excerpt":"TeleVue NP127is: vierlensige Petzval-apochromaat 127\/660 f\/5,2 van absolute topklasse, vlak beeldveld tot full-frame en gezichtsveld tot 4,4 graden. 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Flat, color-corrected image up to full-frame. Delivered with Bahtinov mask, prism rail, and carrying bag.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-51250-Apochromatische-refractor-RedCat-WIFD-4.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33699,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-ap-71-350-71-apochromatische-refractor-redcat-wifd\/","url_meta":{"origin":107792,"position":4},"title":"William Optics AP 71\/350 71 Apochromatic Refractor RedCat WIFD OTA","author":"","date":"14-11-2025","format":false,"excerpt":"William Optics RedCat 71 WIFD: Petzval-apochromaat 71\/350 f\/4,9 met interne WIFD-focuser. Vlak, kleurzuiver beeld tot full-frame. 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