{"id":92382,"date":"2026-01-04T19:44:38","date_gmt":"2026-01-04T18:44:38","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=92382"},"modified":"2026-07-17T14:58:46","modified_gmt":"2026-07-17T12:58:46","slug":"omegon-ac-90-500-ota","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/omegon-ac-90-500-ota\/","title":{"rendered":"Omegon AC 90\/500 OTA"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\">Omegon AC 90\/500 OTA: breedveldbuis met 2 inch Crayford<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Omegon AC 90\/500 OTA<\/strong> is de volwassen breedveldbuis van de lijn: 90 mm opening, 500 mm brandpuntsafstand (f\/5,6) en een 2 inch Crayford-focuser. Met buisringen en transporttas erbij is dit een serieuze reisbuis, een breedveldkijker op een bestaande montering of een betrouwbare volgkijker naast een grote telescoop.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The achromatic doublet lens with multi-coating combines two types of glass to reduce chromatic aberration. At high magnification, a thin color fringe remains visible around bright objects; this is characteristic of this type of lens and does not interfere with normal use.<\/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 decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Telescoop-AC-90-500-OTA-2.jpg\" alt=\"Omegon AC 90\/500 OTA refractorbuis met buisringen\" title=\"\"><\/figure>\n<\/figure>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8d39b2df wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Telescoop-AC-90-500-OTA-3.jpg\" alt=\"De 2 inch Crayford-focuser van de Omegon AC 90\/500 OTA\" title=\"\"><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<h4 class=\"wp-block-heading\">2 inch Crayford: soepel en zwaar belastbaar<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">De Crayford-focuser loopt zonder speling en draagt ook zware 2 inch groothoekoculairs. Daarmee haal je het maximale beeldveld uit de korte brandpuntsafstand: hele sterrenvelden in een oogopslag. De 1,25\/2 inch adapter zit erbij.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sterk tot ongeveer 80x a 100x; daarboven toont de f\/5,6 achromaat een kleurrand. Voor breedveld en als volgkijker is dat geen enkel bezwaar.<\/p>\n<\/div>\n<\/div>\n\n\n\n<h4 class=\"wp-block-heading\">Volgkijker of reisbuis<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">De meegeleverde buisringen passen op een standaard zwaluwstaartplaat, zodat de buis naast of op een grotere telescoop monteert. In de transporttas is hij een complete reiskijker die alleen nog een statief vraagt.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Included<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>AC-optiek 90\/500 met multicoating (losse buis)<\/li>\n\n\n<li>2 inch Crayford focuser<\/li>\n\n\n<li>1,25\/2 inch oculairadapter<\/li>\n\n\n<li>Tube Rings<\/li>\n\n\n<li>Transport bag<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Featured accessories<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Het Omegon Titania 500 driepootstatief (129 euro) maakt er een staande reiskijker van. Het Omegon UWA 20 mm oculair (59 euro) geeft 25x met een groothoekbeeld van 66 graden en een Omegon Premium maanfilter (19,90 euro) dempt de felle Maan.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Never look at the sun through a telescope without a certified solar filter: this can cause permanent eye damage within a second. For the partial solar eclipse on August 12, 2026, the Bresser solar eclipse glasses (\u20ac3.20) are the safest way to watch with the naked eye.<\/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: gevorderde gebruikers die een breedveld-OTA of volgkijker zoeken met een echte 2 inch focuser. Niet: wie een complete set met montering wil; de AC 90\/500 AZ-Baby Visual Set is dezelfde buis als kant-en-klare opstelling. Vergelijk instapmodellen via de <a href=\"\/en\/telescope-selection-aid\/\">Choice assistant<\/a>. Meer Omegon stands on the <a href=\"\/en\/brands\/omegon\/\">merk page<\/a>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Specifications<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th>Value<\/th><\/tr><\/thead><tbody><tr><td>Opening<\/td><td>90 mm<\/td><\/tr><tr><td>Focal length<\/td><td>500 mm<\/td><\/tr><tr><td>Opening ratio<\/td><td>f\/5.6<\/td><\/tr><tr><td>Optical design<\/td><td>Achromatic refractor<\/td><\/tr><tr><td>Execution<\/td><td>OTA (loose tube, without housing)<\/td><\/tr><tr><td>Focuser<\/td><td>2 inch Crayford with 1.25 inch adapter<\/td><\/tr><tr><td>Light output<\/td><td>About 165 times more than the naked eye<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"<p>De Omegon AC 90\/500 OTA wordt geleverd met 2 inch Crayford-focuser, 1,25\/2 inch adapter, buisringen en transporttas: breedveldbuis en volgkijker voor gevorderde gebruikers.<\/p>","protected":false},"featured_media":98789,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[51,3175,567],"product_tag":[],"class_list":["post-92382","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescopen","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":[94869,16701,24780,30871],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":92307,"url":"https:\/\/www.telescoop.nl\/en\/omegon-ac-90-500-az-baby-visual-set\/","url_meta":{"origin":92382,"position":0},"title":"Omegon AC 90\/500 AZ-Baby Visual Set","author":"Info telescoop","date":"04-01-2026","format":false,"excerpt":"The Omegon AC 90\/500 AZ-Baby Visual Set comes with a Crayford focuser, tube rings, Baby-AZ mount, carbon tripod, and carrying bag: a complete grab-and-go wide-field set.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Telescoop-AC-90-500-AZ-Baby-Visual-Set-10.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":32340,"url":"https:\/\/www.telescoop.nl\/en\/bresser-ac-90-500-telescoop-messier-ota\/","url_meta":{"origin":92382,"position":1},"title":"\u00a0Bresser AC 90\/500 Telescope Messier OTA","author":"","date":"02-11-2025","format":false,"excerpt":"De Bresser AC 90\/500 Messier OTA wordt geleverd met achromatische optiek, rek-focuser, SP 26 mm oculair, 6x30 zoeker, 90 graden star diagonal, accessoireschoen en slow-motion kabel. Compacte breedveldbuis.","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\/Bresser-AC-90-500-Telescoop-Messier-OTA.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":91868,"url":"https:\/\/www.telescoop.nl\/en\/omegon-ac-80-400-ota\/","url_meta":{"origin":92382,"position":2},"title":"Omegon AC 80\/400 OTA","author":"","date":"01-01-2026","format":false,"excerpt":"De Omegon AC 80\/400 OTA is een losse breedveldbuis met tandheugelfocuser en 1,25 inch aansluiting: licht, compact en inzetbaar op elke montering of stevig fotostatief.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Telescoop-AC-80-400-OTA.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":16221,"url":"https:\/\/www.telescoop.nl\/en\/omegon-80-500-pro-apo-ed-carbon-ota-field-flattener\/","url_meta":{"origin":92382,"position":3},"title":"Omegon 80\/500 Pro APO ED Carbon OTA + Field Flattener","author":"Info telescoop","date":"19-07-2025","format":false,"excerpt":"De Omegon 80\/500 Pro APO ED Carbon met Field Flattener wordt geleverd met FPL-53 optiek, bijpassende 2 inch flattener, carbon tubus, Power Linear Crayford-focuser en aluminium koffer: volledig vlak beeld op volformaat.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon 80\/500 Pro APO ED Carbon OTA + Field Flattener","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA-Field-Flattener.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA-Field-Flattener.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA-Field-Flattener.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA-Field-Flattener.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA-Field-Flattener.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA-Field-Flattener.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":32291,"url":"https:\/\/www.telescoop.nl\/en\/bresser-messier-102-460-refractor-hexafoc-ota\/","url_meta":{"origin":92382,"position":4},"title":"Bresser Messier 102\/460 Refractor Hexafoc OTA","author":"","date":"02-11-2025","format":false,"excerpt":"The Bresser AC 102\/460 AR-102 OTA comes with a dew shield, accessory shoe, T2 camera adapter, 2 and 1.25 inch eyepiece adapters, SP 26mm eyepiece, 6x30 finder scope, and Hexafoc focuser. Fast wide-field tube.","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\/Bresser-AC-102-460-AR-102-Telescoop-Messier-Hexafoc-OTA-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":16206,"url":"https:\/\/www.telescoop.nl\/en\/omegon-80-500-pro-apo-ed-carbon-ota\/","url_meta":{"origin":92382,"position":5},"title":"Omegon 80\/500 Pro APO ED Carbon OTA","author":"Info telescoop","date":"19-07-2025","format":false,"excerpt":"The Omegon 80\/500 Pro APO ED Carbon comes with an FPL-53 TrueColor doublet, carbon tube, 2-inch Power Linear Crayford focuser, and aluminum carrying case: the lightweight all-rounder for photography and visual observation.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Omegon 80\/500 Pro APO ED Carbon OTA","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Apochromatische-refractor-Pro-APO-AP-80-500-ED-Carbon-OTA.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/92382","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/comments?post=92382"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/98789"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=92382"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=92382"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=92382"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=92382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}