{"id":92575,"date":"2026-01-06T12:35:16","date_gmt":"2026-01-06T11:35:16","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=92575"},"modified":"2026-06-01T21:20:08","modified_gmt":"2026-06-01T19:20:08","slug":"omegon-pro-apo-ap-71-490-quadruplet-ota","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/omegon-pro-apo-ap-71-490-quadruplet-ota\/","title":{"rendered":"Omegon Pro APO AP 71\/490 Quadruplet OTA - 71mm Refractor"},"content":{"rendered":"

Omegon Pro AP 71\/490 Refractor - compact apochromatic for serious astrophotography<\/strong>
The Omegon Pro AP 71\/490 is built for astrophotographers who want to see more and capture more. This compact apochromatic refractor lets you rediscover the sky, with bright colors and fine details hidden by simple optics. You will notice it immediately: stars remain sharp to the edge and nebulae show their true shapes and structures. This gives you images you can be proud of, even from less dark locations.<\/p>\n\n\n\n

Color clean and flat image right out of the box<\/strong>
Thanks to the quadruplet lens design with high-quality ED glass, you will see virtually no color errors. Stars remain point-shaped and nebulae show their natural color gradient. The integrated corrector ensures a flat and well-lit field of view, even when using full-frame cameras. That means less post-processing and more time to enjoy your results.<\/p>\n\n\n\n

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

Why this refractor shows more detail<\/strong>
This apochromatic is designed to maximize contrast. Each lens surface has a high-quality multicoating so that as much light as possible reaches your camera or eye. This produces bright images with clear separation between object and background. On planets, you will see finer structures, and on deep-sky objects, subtle details come out better. This is precisely why many astrophotographers choose this type of optic.<\/p>\n\n\n\n

Powerful 2.5\u2033 focuser for heavy-duty cameras<\/strong>
The rugged 2.5\u2033 rack-and-pinion focuser is made for precision work. You focus without jerking, even with heavier cameras and accessories up to about 4 kg. The 1:10 fine adjustment helps you find exactly that focus where stars stay small and sharp. This makes a big difference in long exposures as your image remains stable and sharp.<\/p>\n\n\n\n

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

360\u00b0 rotation for perfect alignment<\/strong>
Is your object in focus but just misaligned on the sensor? With the 360\u00b0 rotating focuser, you easily rotate the camera to the correct position without having to refocus. This saves time and avoids frustration during nighttime photo sessions.<\/p>\n\n\n\n

Flexible and ready for expansion<\/strong>
The telescope comes as an OTA and is easy to combine with your existing mount. The removable 2\u2033 eyepiece adapter reveals an M64x0.75 thread, so you can use additional accessories without any problem. Everything is designed for flexibility and future-proofing.<\/p>\n\n\n\n

What we recommend<\/strong>
\u2713 Astrophotography: excellent, even with full-frame cameras
\u2713 Nebulae and galaxies: rich in detail and contrast
\u2713 Moon and planets: sharp and color-pure
\u2713 Advanced users seeking compact top quality
\u2717 Beginners who want an easy entry level<\/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>Refractor<\/td><\/tr>
Design<\/td>Apochromate<\/td><\/tr>
Lens Design<\/td>Quadruplet<\/td><\/tr>
Opening<\/td>71 mm<\/td><\/tr>
Focal length<\/td>490 mm<\/td><\/tr>
Opening ratio<\/td>f\/6,9<\/td><\/tr>
Resolution<\/td>1,94\u2033<\/td><\/tr>
Boundary magnitude<\/td>12,3<\/td><\/tr>
Max. useful magnification<\/td>142\u00d7<\/td><\/tr>
Corrected field of view<\/td>44 mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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

Feature<\/th>Description<\/th><\/tr><\/thead>
Design<\/td>Rack-and-pinion<\/td><\/tr>
Ocula Connection<\/td>2\u2033<\/td><\/tr>
Fine adjustment<\/td>1:10 reduction<\/td><\/tr>
Adjustment range<\/td>50 mm<\/td><\/tr>
Rotatable<\/td>Yes, 360\u00b0<\/td><\/tr>
Ring clamp<\/td>Yes<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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

Feature<\/th>Description<\/th><\/tr><\/thead>
Type<\/td>OTA (without mount)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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

Section<\/th>Description<\/th><\/tr><\/thead>
Corrector<\/td>Integrated<\/td><\/tr>
Dew cap<\/td>Yes<\/td><\/tr>
Dovetail<\/td>Vixen-style<\/td><\/tr>
Oculai adapter<\/td>1,25\u2033 & 2\u2033<\/td><\/tr>
Tube Rings<\/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 APO<\/td><\/tr>
Variant<\/td>Flat-Field<\/td><\/tr>
Length<\/td>373 mm<\/td><\/tr>
Tube weight<\/td>3.0 kg<\/td><\/tr>
Total weight<\/td>4.7 kg<\/td><\/tr>
Observation goals<\/td>Astrophotography, Moon & Planets, Nebulae & Galaxies<\/td><\/tr>
Recommended for<\/td>Advanced<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"

Omegon Pro AP 71\/490 Refractor<\/span>\u00a0Comes with integrated field flattener, 2.5\u2033 focuser with 1:10 reduction, ring clamps, Vixen-style dovetail, Amici prism (1.25\u201d), 8mm & 20mm eyepieces - ideal for advanced astrophotographers desiring high image quality with flat field of view.<\/span><\/p>","protected":false},"featured_media":98930,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[51,3175,567],"product_tag":[],"class_list":["post-92575","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescopen","product_cat-refractor-ota","product_cat-refractor-telescopen","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":104875,"url":"https:\/\/www.telescoop.nl\/en\/levenhuk-labzz-t3\/","url_meta":{"origin":92575,"position":0},"title":"Levenhuk LabZZ T3 - 60\/700 Refractor","author":"Abdullah Ibrar","date":"24-03-2026","format":false,"excerpt":"Levenhuk LabZZ T3 - 60\/700 Refractor comes with 4mm eyepiece, 12.5mm eyepiece, 1.5x eyepiece, 3x Barlow lens, 5x optical viewfinder, zenith mirror and aluminum tripod with accessory tray.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Levenhuk LabZZ T3 - 60\/700 Refractor aluminium statief met accessoirebak","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/03\/Levenhuk-LabZZ-T3-60700-Refractor-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":105023,"url":"https:\/\/www.telescoop.nl\/en\/levenhuk-blitz-50-base\/","url_meta":{"origin":92575,"position":1},"title":"Levenhuk Blitz 50 BASE \u2013 50\/600 Refractor","author":"Abdullah Ibrar","date":"01-04-2026","format":false,"excerpt":"The Levenhuk Blitz 50 BASE \u2013 50\/600 Refractor comes with 6mm and 20mm eyepieces, a 3x Barlow lens, a 5x24 finder scope, a diagonal mirror, and an aluminum tripod. 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