{"id":92382,"date":"2026-01-04T19:44:38","date_gmt":"2026-01-04T18:44:38","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=92382"},"modified":"2026-03-03T20:20:49","modified_gmt":"2026-03-03T19:20:49","slug":"omegon-ac-90-500-ota","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/omegon-ac-90-500-ota\/","title":{"rendered":"Omegon AC 90\/500 OTA"},"content":{"rendered":"

Omegon AC 90\/500 Telescope - Compact power on the go<\/strong>
The Omegon AC 90\/500 is a versatile achromatic refractor. With its 90 mm aperture and 500 mm focal length, it offers impressive brightness while remaining lightweight and portable. Perfect for travel observations or as a tracking scope with larger telescopes.<\/p>\n\n\n\n

Excellent optics for clear images<\/strong>
Thanks to the high-quality double-lens lens with multicoating, reflections are minimized. Enjoy sharp impressions of the earth and starry sky from wide field to 80\u00d7 magnification.<\/p>\n\n\n\n

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

2\u2033 Crayford focuser for precise focusing<\/strong>
The Crayford focuser makes it easy to get details razor sharp. Use 2\u2033 eyepieces for wide-field observations or 1.25\u2033 eyepieces via the included adapter.<\/p>\n\n\n\n

Sturdy, durable design<\/strong>
The metal tube and extendable dew cap protect the optics and give the telescope a high-quality look. It is sturdy enough for intensive use, but light enough to take with you when traveling.<\/p>\n\n\n\n

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

Versatile mounting options<\/strong>
The telescope comes with double tube rings and an attached dovetail. Thus it fits virtually any mount with GP clamp, ideal for astrophotography or as a tracking scope on larger telescopes.<\/p>\n\n\n\n

Included accessories<\/strong>
\u2713 Tube rings for mounting
\u2713 Transport bag
\u2713 1.25\u2033 & 2\u2033 eyepiece adapter<\/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>Achromate<\/td><\/tr>
Aperture (mm)<\/td>90<\/td><\/tr>
Focal length (mm)<\/td>500<\/td><\/tr>
Aperture ratio (f\/)<\/td>5,5<\/td><\/tr>
Resolution<\/td>1.15 (Rayleigh)<\/td><\/tr>
Limit value (mag)<\/td>12,2<\/td><\/tr>
Light output<\/td>165\u00d7<\/td><\/tr>
Max. useful magnification<\/td>80\u00d7<\/td><\/tr>
Tube weight (kg)<\/td>2,2<\/td><\/tr>
Tube construction<\/td>Full tube<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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

Feature<\/th>Description<\/th><\/tr><\/thead>
Design<\/td>Crayford<\/td><\/tr>
Ocular connection<\/td>2\u2033<\/td><\/tr>
Backfocus (mm)<\/td>130<\/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>
GoTo steering<\/td>No<\/td><\/tr>
Design<\/td>OTA<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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

Section<\/th>Description<\/th><\/tr><\/thead>
Tube Rings<\/td>Yes<\/td><\/tr>
Transport bag<\/td>Yes<\/td><\/tr>
Eyepiece adapter<\/td>1,25\u2033 & 2\u2033<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Application<\/strong><\/p>\n\n\n\n

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

Omegon AC 90\/500 Telescope<\/span>\u00a0Comes with achromatic refractor, 2\u2033 Crayford focuser, tube rings, 1.25\u2033\/2\u2033 eyepiece adapter and transport bag - ideal for advanced users who want to make sharp wide-field observations or seek a reliable tracking scope for astrophotography.<\/span><\/p>","protected":false},"featured_media":98789,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[51,567],"product_tag":[],"class_list":["post-92382","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescopen","product_cat-refractors","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":92307,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-ac-90-500-az-baby-visual-set\/","url_meta":{"origin":92382,"position":0},"title":"Omegon AC 90\/500 AZ-Baby Visual Set","author":"Info telescoop","date":"04-01-2026","format":false,"excerpt":"Omegon AC 90\/500 Telescoop\u00a0wordt geleverd met achromatische refractor, Crayford-focuser, volgkijker-buisringen, Baby-AZ montering, carbonstatief en transporttas \u2013 ideaal voor reisdoeleinden, natuur- en maanobservatie in een compact lichtgewicht ontwerp.","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-Telescoop-AC-90-500-AZ-Baby-Visual-Set-11.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Telescoop-AC-90-500-AZ-Baby-Visual-Set-11.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Telescoop-AC-90-500-AZ-Baby-Visual-Set-11.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Telescoop-AC-90-500-AZ-Baby-Visual-Set-11.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":7705,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-ac-70-700-az-2\/","url_meta":{"origin":92382,"position":1},"title":"Omegon AC 70\/700 AZ-2 Achromatic Refractor","author":"Info telescoop","date":"12-02-2025","format":false,"excerpt":"The Omegon AC 70\/700 AZ-2 including azimuthal tripod mount + 10 mm and 20 mm Kellner eyepieces (1.25\u2033) + 2\u00d7 Barlow lens + diagonal prism.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Omegon-Telescoop-AC-70-700-AZ-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Omegon-Telescoop-AC-70-700-AZ-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Omegon-Telescoop-AC-70-700-AZ-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Omegon-Telescoop-AC-70-700-AZ-2.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Omegon-Telescoop-AC-70-700-AZ-2.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/02\/Omegon-Telescoop-AC-70-700-AZ-2.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":7707,"url":"https:\/\/staging.telescoop.nl\/en\/omegon-102-660-achromatische-refractor\/","url_meta":{"origin":92382,"position":2},"title":"Omegon 102\/660 AZ-3 - 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