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 De kwartsspiegels houden de focus stabiel, ook bij lange belichtingen en dalende temperaturen: nauwelijks bijstellen, meer bruikbare data. De kogelgelagerde 3 inch monorail focuser belicht grootformaat beeldvelden zonder vignettering.<\/p>\n\n\n\n Verlengstukken stellen de backfocus in op elke camera-configuratie; de Losmandy-zwaluwstaart koppelt aan observatorium-monteringen.<\/p>\n<\/div>\n<\/div>\n\n\n\n Het Omegon Pro UHC 2 inch filter (89 euro) haalt emissienevels naar voren en de Omegon Powerbank 10k 12V (39,90 euro) voedt ventilatoren en camera op locatie.<\/p>\n\n\n\n Wel: sterrenwachten en zeer gevorderde astrofotografen die 14 inch RC-prestaties voor de scherpste prijs willen. Niet: wie de montering wil ontzien; de Lichtgewicht-uitvoering drukt de spiegelmassa verder omlaag. Twijfel je tussen de modellen? De Choice assistant<\/a> helpt. More Omegon is on the merk page<\/a>.<\/p>\n\n\n\n De Omegon Pro RC 355\/2845 Truss wordt geleverd met open carbon truss-tubus, hyperbolische kwartsspiegels met honingraatstructuur, 3 inch monorail focuser, krachtige ventilators, verlengstukken en Losmandy-zwaluwstaart.<\/p>","protected":false},"featured_media":98678,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[51,428,531,2972,3167],"product_tag":[],"class_list":["post-92206","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-telescopen","product_cat-ritchey-chretien-telescopen","product_shipping_class-telescoop","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":[25035,93445],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":92196,"url":"https:\/\/www.telescoop.nl\/en\/omegon-pro-newton-355-2845-lichtgewicht-truss-ota\/","url_meta":{"origin":92206,"position":0},"title":"Omegon Pro Newton 355\/2845 Lightweight Truss OTA","author":"","date":"03-01-2026","format":false,"excerpt":"De Omegon Pro RC 355\/2845 Lichtgewicht Truss wordt geleverd met open carbon truss-tubus, honingraat-hoofdspiegel van kwarts, 3 inch monorail focuser, ventilatorsysteem, Losmandy-zwaluwstaart, drie verlengstukken en precisie-collimatie.","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-Ritchey-Chretien-Pro-RC-355-2845-lichtgewicht-truss-OTA-7.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":92224,"url":"https:\/\/www.telescoop.nl\/en\/omegon-pro-rc-406-3250-truss-ota\/","url_meta":{"origin":92206,"position":1},"title":"Omegon Pro RC 406\/3250 Truss OTA - 406mm Ritchey-Chr\u00e9tien","author":"Info telescoop","date":"03-01-2026","format":false,"excerpt":"De Omegon Pro RC 406\/3250 Truss wordt geleverd met open carbon truss-tubus, honingraat-hoofdspiegel van kwarts, 3 inch monorail focuser, krachtige ventilator, verlengstukken en Losmandy-zwaluwstaart: 16 inch voor de scherpste prijs.","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-Ritchey-Chretien-Pro-RC-406-3250-Truss-OTA-4.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":92172,"url":"https:\/\/www.telescoop.nl\/en\/omegon-pro-newton-304-2432-lichtgewicht-truss-ota\/","url_meta":{"origin":92206,"position":2},"title":"Omegon Pro Newton 304\/2432 Lightweight Truss OTA","author":"","date":"03-01-2026","format":false,"excerpt":"The Omegon Pro RC 304\/2432 Lightweight Truss comes with an open carbon truss tube, hyperbolic quartz mirrors, a honeycomb primary mirror, a 3-inch monorail focuser, a fan, three extension tubes, and a Losmandy dovetail.","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-Ritchey-Chretien-Pro-RC-304-2432-lichtgewicht-truss-OTA-7.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":92182,"url":"https:\/\/www.telescoop.nl\/en\/omegon-pro-newton-304-2432-truss-ota\/","url_meta":{"origin":92206,"position":3},"title":"Omegon Pro Newton 304\/2432 Truss OTA","author":"","date":"03-01-2026","format":false,"excerpt":"De Omegon Pro RC 304\/2432 Truss wordt geleverd met open carbon truss-tubus, hyperbolische kwartsspiegels, 3 inch monorail focuser, ventilator, drie verlengstukken, instelbare spiegeldrager en Losmandy-zwaluwstaart.","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-Ritchey-Chretien-Pro-RC-304-2432-Truss-OTA-10.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":92214,"url":"https:\/\/www.telescoop.nl\/en\/omegon-pro-newton-406-3250-lichtgewicht-truss-ota\/","url_meta":{"origin":92206,"position":4},"title":"Omegon Pro Newton 406\/3250 Lightweight Truss OTA","author":"Info telescoop","date":"03-01-2026","format":false,"excerpt":"De Omegon Pro RC 406\/3250 Lichtgewicht Truss wordt geleverd met open carbon truss-tubus, honingraat-hoofdspiegel van kwarts, 3 inch monorail focuser, krachtige ventilator, Losmandy-zwaluwstaart, drie verlengstukken en instelbare spiegeldrager.","rel":"","context":"Similar post","block_context":{"text":"Similar 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"\\"\\"")
<\/figure>\n<\/figure>\n\n\n\n![\"De](\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Ritchey-Chretien-Pro-RC-355-2845-Truss-OTA-4.jpg\" "\\"\\"")
<\/figure>\n<\/div>\n\n\n\nSharpness that remains<\/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> 355 mm<\/td><\/tr> Focal length<\/td> 2845 mm<\/td><\/tr> Opening ratio<\/td> f\/8<\/td><\/tr> Optical design<\/td> Ritchey-Chr\u00e9tien (hyperbolic quartz mirrors)<\/td><\/tr> Tubus<\/td> Open carbon truss<\/td><\/tr> Focuser<\/td> 3-inch monorail<\/td><\/tr> Ventilator<\/td> Krachtige ventilators<\/td><\/tr> Execution<\/td> OTA (loose tube)<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"