{"id":16673,"date":"2025-07-29T10:31:13","date_gmt":"2025-07-29T08:31:13","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=16673"},"modified":"2026-10-13T11:15:41","modified_gmt":"2026-10-13T09:15:41","slug":"20mm-eyepiece-omegon-swa-wide-angle-70","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/20mm-oculair-omegon-swa-groothoek-70\/","title":{"rendered":"20mm eyepiece - Omegon SWA wide-angle 70\u00b0"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Omegon's SWA series 20mm eyepiece is designed for observers who like to see a large portion of the sky in one field of view. With a wide 70\u00b0 field of view, this eyepiece provides a spacious and comfortable image, perfect for viewing open star clusters, nebulae and the moon in context.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The optical construction consists of five carefully placed lens elements in three groups. Thanks to full multicoating and blackened lens edges, the eyepiece offers high contrast with minimal reflections. The rubber exterior provides grip, while the infinitely adjustable eyecup also allows spectacle wearers to utilize the entire field of view.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">All eyepieces in the SWA series are parfocal: you hardly need to refocus when changing, which is pleasant during an observing session.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Key features<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>20mm eyepiece with 70\u00b0 wide angle view<\/li>\n\n\n\n<li>Ideal for wide deep-sky observations and lunar surface<\/li>\n\n\n\n<li>Five lenses in three groups for sharp and calm images<\/li>\n\n\n\n<li>Multicoating and internal baffling for high contrast<\/li>\n\n\n\n<li>Parfocal within the SWA series<\/li>\n\n\n\n<li>Infinitely adjustable eyecup, suitable for eyeglass wearers<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Specifications<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Focal length: 20 mm<\/li>\n\n\n\n<li>Barrel: 1.25\u2033<\/li>\n\n\n\n<li>Apparent field of view: 70\u00b0<\/li>\n\n\n\n<li>Optical design: 5 elements in 3 groups<\/li>\n\n\n\n<li>Full multi-coating<\/li>\n\n\n\n<li>Filter thread: yes<\/li>\n\n\n\n<li>Parfocal: yes<\/li>\n\n\n\n<li>Adjustable eye cup: yes<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Observation goals<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The 20mm eyepiece is ideally suited for telescopes with short and medium focal lengths. It delivers a wide and calm image ideal for deep-sky objects such as open star clusters, but can also be used for the moon and larger planetary disks.<\/p>","protected":false},"excerpt":{"rendered":"<p data-start=\"226\" data-end=\"343\">Omegon 20mm eyepiece with 70\u00b0 wide field of view for quiet and clear deep-sky observations and wide lunar images.<\/p>","protected":false},"featured_media":22760,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[3131,3129,56],"product_tag":[],"class_list":["post-16673","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-groothoek-oculairen-wide-field","product_cat-oculairs-en-barlows","product_cat-telescoop-accessoires","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":111636,"url":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/","url_meta":{"origin":16673,"position":0},"title":"ZWO Seestar S50 Pro","author":"Info telescoop","date":"25-08-2026","format":false,"excerpt":"The ZWO Seestar S50 Pro is the successor to the Seestar S50: 50 mm quadruplet APO (260 mm, f\/5.2), two 8.3 MP 4K sensors, a 63-degree wide-angle camera for the Milky Way up to 8K, three built-in filters, a 10,000 mAh battery (up to 9 hours), and 128 GB of storage. Four capture modes for...","rel":"","context":"With 5 comments","block_context":{"text":"With 5 comments","link":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/#comments"},"img":{"alt_text":"ZWO Seestar S50 Pro hero","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/16673","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/comments?post=16673"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/22760"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=16673"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=16673"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=16673"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=16673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}