{"id":16308,"date":"2025-07-23T15:08:39","date_gmt":"2025-07-23T13:08:39","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=16308"},"modified":"2026-03-04T21:08:27","modified_gmt":"2026-03-04T20:08:27","slug":"omegon-203-2436-cassegrain-ota","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/omegon-203-2436-cassegrain-ota\/","title":{"rendered":"Omegon 203\/2436 Cassegrain Newton"},"content":{"rendered":"

Cassegrain telescope 203mm f\/12 OTA for astrophotography and visual observation<\/strong> is designed for pure precision. With 203 mm aperture, an impressive 2436 mm focal length and a classic Cassegrain configuration, this telescope offers exceptional sharpness and contrast, perfect for high-res photography of planets, the moon and binary stars.<\/p>\n\n\n\n

The f\/12 ratio and closed design make this instrument ideally suited to observing locations with moderate seeing or high humidity. The tube is collimation-resistant and low-maintenance, with a more compact shape than a comparable refractor of the same focal length.<\/p>\n\n\n\n

\u2713 203 mm aperture - lots of light output for detailed observations
\u2713 f\/12 focal ratio - ideal for planets, binary stars and lucky imaging
\u2713 Closed design - low sensitivity to dust and temperature fluctuations
\u2713 Compact tube shape - easier to mount than long refractors
\u2713 Exceptionally suitable for photography with barlow and planetary cameras<\/p>\n\n\n\n

This telescope makes it easy to capture Saturn's Cassini edge, detail in Jupiter's cloud bands or the shadow of a moon during a transit. Visually, too, this is a powerful instrument for double-star enthusiasts and for high-magnification detail on the moon.<\/p>\n\n\n\n

Application<\/strong><\/h3>\n\n\n\n
    \n
  • Photography of planets, the moon and binary stars<\/li>\n\n\n\n
  • High magnification visual observation<\/li>\n\n\n\n
  • Compact alternative to a long refractor (e.g. 150 mm f\/15)<\/li>\n\n\n\n
  • Suitable for fixed installation, balcony observation or observatory use<\/li>\n<\/ul>\n\n\n\n

    What you can see with it<\/strong><\/h3>\n\n\n\n

    \u2713 Mars details at opposition, Saturn's rings and moons
    \u2713 Jupiter transitions and Great Red Spot
    \u2713 Sublime separation of binary stars up to 0.5\u2033 separation
    \u2713 Crater structures and rills on the moon at 300x magnification
    \u2713 Visual observation without chromatic aberration<\/p>\n\n\n\n

    Filters \/ Properties<\/strong><\/h3>\n\n\n\n
      \n
    • Telescope type<\/strong>: Reflector<\/li>\n\n\n\n
    • Design<\/strong>: Classic Cassegrain<\/li>\n\n\n\n
    • Lens diameter<\/strong>: 203 mm<\/li>\n\n\n\n
    • Focal length<\/strong>: 2436 mm<\/li>\n\n\n\n
    • Opening ratio<\/strong>: f\/12<\/li>\n\n\n\n
    • Focuser<\/strong>: 2\u2033 connection (usually via adapter)<\/li>\n\n\n\n
    • Use Type<\/strong>: Planetary photography \/ double stars \/ moon<\/li>\n\n\n\n
    • Tripod connector<\/strong>: Vixen or Losmandy-style dovetail (depending on version)<\/li>\n\n\n\n
    • Suitable for beginners<\/strong>: \u2717<\/li>\n\n\n\n
    • Suitable for advanced users<\/strong>: \u2713<\/li>\n\n\n\n
    • Suitable for observatories<\/strong>: \u2713<\/li>\n<\/ul>\n\n\n\n

      Technical specifications<\/strong><\/h3>\n\n\n\n
        \n
      • Optics: Classic Cassegrain with 2 mirrors<\/li>\n\n\n\n
      • Main mirror: Parabolic<\/li>\n\n\n\n
      • Secondary mirror: hyperbolic<\/li>\n\n\n\n
      • Coating: Alu + SiO\u2082 reflection coating<\/li>\n\n\n\n
      • Aperture: 203 mm<\/li>\n\n\n\n
      • Focal length: 2436 mm<\/li>\n\n\n\n
      • Tube length: approx. 600-650 mm<\/li>\n\n\n\n
      • Weight: \u00b1 7-8 kg<\/li>\n\n\n\n
      • Construction: closed tube<\/li>\n\n\n\n
      • Focuser: mostly via rear connector with optional Crayford<\/li>\n\n\n\n
      • Included: OTA, dust cover, dovetail<\/li>\n\n\n\n
      • Mounting: not included<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

        Cassegrain telescope 203mm f\/12 OTA for astrophotography and visual observation<\/strong> With long focal length, high sharpness and closed design - ideal for planets, binary stars 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":[51,428,531],"product_tag":[],"class_list":["post-16308","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescopen","product_cat-telescopen-voor-astrofotografie","product_cat-gevorderd","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":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":16301,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-114-1368-cassegrain-ota\/","url_meta":{"origin":16308,"position":0},"title":"Omegon 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