A Ritchey-Chr\u00e9tien uses two hyperbolic mirrors: the design of virtually every professional observatory. The result is a large, coma-free field of view without a corrector: stars remain round all the way to the edges of the sensor.<\/p>\n\n\n\n
The open carbon truss construction is the recipe of professional observatories: rigid, light, and thermally stable, with natural ventilation that prevents its own microclimate inside the tube. The built-in 12V fan cools the primary mirror up to twice as fast, so you're working at full sharpness sooner.<\/p>\n\n\n\n The honeycomb primary mirror saves weight exactly where it matters most for a 16-inch telescope, while the quartz base keeps the focal point stable during temperature fluctuations. The ball-bearing-mounted 3-inch monorail focuser illuminates large-format sensors without vignetting.<\/p>\n\n\n\n Three extension tubes, powerful fan, adjustable mirror cell and Losmandy dovetail complete the equipment.<\/p>\n<\/div>\n<\/div>\n\n\n\n The Omegon Pro UHC 2-inch filter (89 euros) brings out emission nebulae, and the Omegon Powerbank 10k 12V (39.90 euros) powers the fan and camera in the observatory.<\/p>\n\n\n\n Who: observatories that want the maximum of the RC line with the lowest possible mirror mass. Not: those for whom the budget outweighs the weight; the standard RC 406\/3250 Truss delivers the same aperture class for nineteen hundred euros less. Are you hesitating between the models? The Choice assistant<\/a> helpt. More Omegon is on the merk page<\/a>.<\/p>\n\n\n\n The Omegon Pro RC 406\/3250 Lightweight Truss comes with an open carbon truss tube, quartz honeycomb primary mirror, 3-inch monorail focuser, powerful fan, Losmandy dovetail, three extension tubes, and adjustable mirror cell.<\/p>","protected":false},"featured_media":98684,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[51,428,3259,3164,2972],"product_tag":[],"class_list":["post-92214","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescopen","product_cat-telescopen-voor-astrofotografie","product_cat-gevorderd","product_cat-reflector-ota","product_cat-reflector-telescopen","product_shipping_class-telescoop","first","outofstock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"outofstock","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":[25035,93445],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":111636,"url":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/","url_meta":{"origin":92214,"position":0},"title":"ZWO Seestar S50 Pro","author":"Info telescoop","date":"25-08-2026","format":false,"excerpt":"De ZWO Seestar S50 Pro is de opvolger van de Seestar S50: 50 mm quadruplet APO (260 mm, f\/5.2), twee 4K-sensoren van 8,3 MP, een groothoekcamera van 63 graden voor de Melkweg tot 8K, drie ingebouwde filters, 10.000 mAh accu (tot 9 uur) en 128 GB opslag. Vier opnamemodi voor\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"ZWO Seestar S50 Pro hero","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/92214","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=92214"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/98684"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=92214"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=92214"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=92214"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=92214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Omegon](\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Ritchey-Chretien-Pro-RC-406-3250-lichtgewicht-truss-OTA-5.jpg\" "\\"\\"")
<\/figure>\n<\/figure>\n\n\n\n![\"The](\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Ritchey-Chretien-Pro-RC-406-3250-lichtgewicht-truss-OTA-3.jpg\" "\\"\\"")
<\/figure>\n<\/div>\n\n\n\nObservatory class without crane<\/h4>\n\n\n\n
Included<\/h4>\n\n\n\n
\n
Featured accessories<\/h4>\n\n\n\n
For whom yes, for whom no<\/h4>\n\n\n\n
Specifications<\/h4>\n\n\n\n
Feature<\/th> Value<\/th><\/tr><\/thead> Opening<\/td> 406 mm<\/td><\/tr> Focal length<\/td> 3250 mm<\/td><\/tr> Opening ratio<\/td> f\/8<\/td><\/tr> Optical design<\/td> Ritchey-Chr\u00e9tien (hyperbolic quartz mirrors)<\/td><\/tr> Main mirror<\/td> Honeycomb quartz<\/td><\/tr> Tubus<\/td> Open carbon truss<\/td><\/tr> Focuser<\/td> 3-inch monorail<\/td><\/tr> Mirror holder<\/td> Adjustable<\/td><\/tr> Execution<\/td> OTA (loose tube)<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"