{"id":16308,"date":"2025-07-23T15:08:39","date_gmt":"2025-07-23T13:08:39","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=16308"},"modified":"2026-10-13T11:07:05","modified_gmt":"2026-10-13T09:07:05","slug":"omegon-203-2436-cassegrain-ota","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/omegon-203-2436-cassegrain-ota\/","title":{"rendered":"Omegon 203\/2436 Cassegrain Newton"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\">Omegon 203\/2436 Cassegrain Newtonian: The Long Refractor Replacement<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Omegon 203\/2436 Cassegrain<\/strong> delivers what used to be a 1.5-meter refractor: 2436 mm focal length (f\/12) with a 203 mm aperture, in a tube that fits a standard mount. Exceptional sharpness and contrast for high-res photography and visual observation of planets, the Moon, and double stars.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The long focal length makes high magnifications achievable with ordinary eyepieces and directly provides a usable image scale for planetary photography and lucky imaging.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Made for tough conditions<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The closed, collimation-stable design is advantageous at observing sites with moderate seeing or high humidity: less airflow in the tube, less maintenance. With a 10 mm eyepiece, you are at 244x, and the practical maximum is around 400x for nights that allow it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The dovetail depends on the Vixen or Losmandy style; dust cap is included.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Included<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cassegrain optics 203\/2436<\/li>\n\n\n<li>2-inch rear connection<\/li>\n\n\n<li>Dust cover<\/li>\n\n\n<li>Dovetail (Vixen- or Losmandy-style, depending on version)<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Featured accessories<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The Omegon Cronus 7 mm eyepiece (79 euros) provides 348x magnification for the clearest nights, and the Omegon 7\u201321 mm zoom eyepiece (69 euros) offers a continuously adjustable magnification range from 116x to 348x. An Omegon Premium 2-inch 50 percent moon filter (34.90 euros) makes viewing the Moon comfortable.<\/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\">For: planetary observers and high-res photographers who want maximum scale without a meter-long refractor. Not for: those seeking an all-rounder; for mixed deep-sky and planetary work, the ProNewton 203\/1000 is the more versatile 8-inch. Still unsure between the models? The <a href=\"\/en\/telescope-selection-aid\/\">Choice assistant<\/a> helpt. More Omegon is on the <a href=\"\/en\/brands\/omegon\/\">brand 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>203 mm<\/td><\/tr><tr><td>Focal length<\/td><td>2436 mm<\/td><\/tr><tr><td>Opening ratio<\/td><td>f\/12<\/td><\/tr><tr><td>Optical design<\/td><td>Classic Cassegrain<\/td><\/tr><tr><td>Rear connection<\/td><td>2 inches<\/td><\/tr><tr><td>Dovetail<\/td><td>Vixen-style Losmandy mount<\/td><\/tr><tr><td>Execution<\/td><td>OTA (loose tube)<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"<p>The Omegon 203\/2436 Cassegrain offers a 2436mm focal length with high sharpness and contrast in a compact, collimation-stable tube: the alternative to a long refractor, for planets and high-res photography.<\/p>","protected":false},"featured_media":22192,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[51,3164,2972],"product_tag":[3352,3353],"class_list":["post-16308","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescopen","product_cat-reflector-ota","product_cat-reflector-telescopen","product_tag-sterrenkijker","product_tag-sterrenkijkers","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":[12702,92457,24823],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":16317,"url":"https:\/\/www.telescoop.nl\/en\/omegon-154-1848-cassegrain-ota\/","url_meta":{"origin":16308,"position":0},"title":"Omegon 154\/1848 Cassegrain Newton","author":"Info telescoop","date":"23-07-2025","format":false,"excerpt":"The Omegon 154\/1848 Cassegrain offers a focal length of 1848 mm in a compact, collimation-stable tube with a 2-inch rear connection, dust cover, and Vixen dovetail: planetary contrast for balconies and permanent setups.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Cassegrain-Teleskop 154mm f\/12 OTA","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Cassegrain-telescoop-Pro-CC-154-1848-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-Cassegrain-telescoop-Pro-CC-154-1848-OTA.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Cassegrain-telescoop-Pro-CC-154-1848-OTA.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Cassegrain-telescoop-Pro-CC-154-1848-OTA.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Cassegrain-telescoop-Pro-CC-154-1848-OTA.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/07\/Omegon-Cassegrain-telescoop-Pro-CC-154-1848-OTA.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":30088,"url":"https:\/\/www.telescoop.nl\/en\/celestron-edgehd-800-203-2032-cgem-ii-goto\/","url_meta":{"origin":16308,"position":1},"title":"Celestron EdgeHD 800 203\/2032 CGEM II GoTo","author":"","date":"04-10-2025","format":false,"excerpt":"The Celestron EdgeHD 800 CGEM II comes with 203 mm EdgeHD optics with a flat, coma-free field of view and the CGEM II GoTo mount with 18 kg load capacity, NexStar+ hand controller and autoguide port.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Celestron Schmidt-Cassegrain Telescoop SC 203\/2032 EdgeHD 800 CGEM II GoTo","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/10\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-EdgeHD-800-CGEM-II-GoTo.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/10\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-EdgeHD-800-CGEM-II-GoTo.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/10\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-EdgeHD-800-CGEM-II-GoTo.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/10\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-EdgeHD-800-CGEM-II-GoTo.jpg?resize=700%2C400&ssl=1 2x, 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203\/2032 CGEM II 800 GoTo","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/10\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-CGEM-II-800-GoTo.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/10\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-CGEM-II-800-GoTo.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/10\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-CGEM-II-800-GoTo.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/10\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-CGEM-II-800-GoTo.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/10\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-CGEM-II-800-GoTo.jpg?resize=1050%2C600&ssl=1 3x, 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You can choose the appropriate mounting and the accessories that come with it below. The Omegon ProNewton N 203\/1000 comes with a metal Newton tube, a 2-inch Crayford focus, a red dot viewfinder, tube rings, a 1.25\/2-inch adapter and a Vixen-style dovetail: the 8-inch all-rounder as a standalone\u2026","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-ProNewton-N-203-1000-OTA-3.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":12225,"url":"https:\/\/www.telescoop.nl\/en\/celestron-c8-sc-203-2032-advanced-vx-goto\/","url_meta":{"origin":16308,"position":4},"title":"Celestron C8 203\/2032 Schmidt-Cassegrain Advanced VX GoTo","author":"Info telescoop","date":"26-02-2025","format":false,"excerpt":"The Celestron SC 203\/2032 Advanced VX comes with the classic C8 Schmidt-Cassegrain optics and the Advanced VX GoTo mount featuring a NexStar+ hand controller, All-Star Polar Alignment, and an autoguider port.","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\/02\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-AVX-GoTo-10.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-AVX-GoTo-10.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-AVX-GoTo-10.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-AVX-GoTo-10.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-AVX-GoTo-10.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/02\/Celestron-Schmidt-Cassegrain-telescoop-SC-203-2032-AVX-GoTo-10.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":93230,"url":"https:\/\/www.telescoop.nl\/en\/omegon-gewatteerde-tas-transporttas-voor-telescopen-154-1370-6-rc-8-sc\/","url_meta":{"origin":16308,"position":5},"title":"Omegon Padded Transport Bag for 6 inch RC and 8 inch SC","author":"","date":"09-01-2026","format":false,"excerpt":"Padded bag with 10 mm lining for optical tubes from 154 to 203 mm, such as the 154\/1370 RC and 8-inch SC. 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