{"id":92214,"date":"2026-01-03T18:40:28","date_gmt":"2026-01-03T17:40:28","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=92214"},"modified":"2026-03-04T16:20:11","modified_gmt":"2026-03-04T15:20:11","slug":"omegon-pro-newton-406-3250-lightweight-truss-ota","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-newton-406-3250-lichtgewicht-truss-ota\/","title":{"rendered":"Omegon Pro Newton 406\/3250 Lightweight Truss OTA"},"content":{"rendered":"

Omegon Pro RC 406\/3250 Telescope - Professional astrophotography at its best<\/strong>
The Omegon Pro RC 406\/3250 is a Ritchey-Chr\u00e9tien telescope for serious astrophotographers and observatories. It delivers a sharp image over a wide field of view, with no distortion or coma. Stars remain spot on all the way to the edge of your image, even at long exposures.<\/p>\n\n\n\n

Hyperbolic mirrors, stable image<\/strong>
The quartz main and catch mirrors keep the focus stable even with temperature changes. Adjustment is hardly necessary. 92-94%'s reflective coating allows you to see bright, high-contrast stars and nebulae.<\/p>\n\n\n\n

\"Omegon<\/figure>\n\n\n\n

Lots of light, large field<\/strong>
With a 406 mm main mirror, you capture an enormous amount of light. This gives bright images of deep nebulae, galaxies and clusters. The RC design delivers sharpness all the way to the edge without the need for a corrector.<\/p>\n\n\n\n

Fast cooling, minimal turbulence<\/strong>
The open carbon gitter tube design allows air to flow freely. This eliminates hot air layers in the tube and keeps your image stable. The built-in fan cools the main mirror up to 50% faster, so you'll be ready for perfect images faster.<\/p>\n\n\n\n

Strong, accurate focuser<\/strong>
The 3\u2033 Crayford focuser with ball bearings accommodates large CCD cameras. It is fully rotatable, accurately adjustable with 1:10 reduction and remains stable so your camera is always exactly on the optical axis. No tilting, no vignetting, just sharp images.<\/p>\n\n\n\n

\"Omegon<\/figure>\n\n\n\n

Better performance than SC telescopes<\/strong>
Without a corrector plate, there is no internal reflection and the telescope adjusts more quickly to the ambient temperature. RC telescopes are the best corrected two-mirror telescopes. Both in the center and at the edge of your image, everything remains razor sharp.<\/p>\n\n\n\n

Suitable for professional hobby astronomers<\/strong>
RC telescopes used to be available only to institutions. Now you can achieve the same results as an advanced amateur with this technology: large CCD cameras, long exposures and bright, high-contrast images.<\/p>\n\n\n\n

What we recommend<\/strong>
\u2713 Nebulae & galaxies: excellent
\u2713 Astrophotography: top quality
\u2717 Moon & Planets: not ideal because of long focal length
\u2717 Nature observation: not suitable
\u2717 Sun: only with special sun filters<\/p>\n\n\n\n

Specifications<\/h3>\n\n\n\n

Optics<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Type<\/td>Reflector<\/td><\/tr>
Design<\/td>Ritchey-Chr\u00e9tien<\/td><\/tr>
Aperture (mm)<\/td>406<\/td><\/tr>
Focal length (mm)<\/td>3250<\/td><\/tr>
Aperture ratio (f\/)<\/td>8<\/td><\/tr>
Resolution<\/td>0,28\u2033<\/td><\/tr>
Limit value (mag)<\/td>15,5<\/td><\/tr>
Light output<\/td>3364\u00d7<\/td><\/tr>
Max. useful magnification<\/td>800\u00d7<\/td><\/tr>
Tube weight (kg)<\/td>36<\/td><\/tr>
Tube length (mm)<\/td>1120<\/td><\/tr>
Tube material<\/td>Carbon<\/td><\/tr>
Tube diameter (mm)<\/td>535<\/td><\/tr>
Tube construction<\/td>Open tube<\/td><\/tr>
Coating<\/td>Aluminum & silicon dioxide<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Reflector<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Head mirror design<\/td>Hyperbolic<\/td><\/tr>
Catch mirror obstruction<\/td>47%<\/td><\/tr>
Capture mirror diameter (mm)<\/td>190<\/td><\/tr>
Reflectivity<\/td>94%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Focuser<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Design<\/td>Monorail 3\u2033<\/td><\/tr>
Ocular connection<\/td>3\u2033<\/td><\/tr>
Reduction<\/td>1:10 finesse<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Mount<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Type of mount<\/td>Without mount<\/td><\/tr>
Design<\/td>OTA<\/td><\/tr>
GoTo steering<\/td>No<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Included accessories<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Dovetail<\/td>Losmandy-Style<\/td><\/tr>
Extensions<\/td>Yes<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

General<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Series<\/td>Pro RC<\/td><\/tr>
Application<\/td>Nebulae & galaxies<\/td><\/tr>
Astrophotography<\/td>Yes<\/td><\/tr>
Recommended for<\/td>Advanced<\/td><\/tr>
Observatories<\/td>Yes<\/td><\/tr>
Moon & Planets<\/td>No<\/td><\/tr>
Nature observation<\/td>No<\/td><\/tr>
Sun<\/td>Not recommended (only with appropriate sunscreens)<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"

Omegon Pro RC 406\/3250 Telescope<\/strong>\u00a0Comes with open carbon truss tube, quartz honeycomb main mirror, 3\u2033 monorail focuser, high-power fan, Losmandy swallowtail, three extensions and adjustable mirror carrier - perfect for observatories and advanced astrophotographers seeking maximum sharpness and stability for large-screen shots.<\/span><\/p>","protected":false},"featured_media":98684,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[51,531],"product_tag":[],"class_list":["post-92214","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescopen","product_cat-gevorderd","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":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":92224,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-pro-rc-406-3250-truss-ota\/","url_meta":{"origin":92214,"position":0},"title":"Omegon Pro RC 406\/3250 Truss OTA - 406mm Ritchey-Chr\u00e9tien","author":"Info telescoop","date":"03-01-2026","format":false,"excerpt":"Omegon Pro RC 406\/3250 Telescoop\u00a0wordt geleverd met open carbon truss-tubus, honingraat-hoofdspiegel van kwarts, 3\" monorail focuser, krachtige ventilator, verlengstukken en Losmandy-zwaluwstaart \u2013 ideaal voor gevorderde astrofotografen en observatoria die behoefte hebben aan extreme beeldscherpte en hoge lichtopbrengst.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Ritchey-Chretien-Pro-RC-406-3250-Truss-OTA-6.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Ritchey-Chretien-Pro-RC-406-3250-Truss-OTA-6.jpg?resize=350%2C200&ssl=1 1x, 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