{"id":27894,"date":"2025-09-02T22:18:44","date_gmt":"2025-09-02T20:18:44","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=27894"},"modified":"2026-09-10T14:45:29","modified_gmt":"2026-09-10T12:45:29","slug":"askar-ap-203-1421-ota","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/askar-ap-203-1421-ota\/","title":{"rendered":"Askar AP 203\/1421 OTA"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>203 mm: one of the largest apochromats you can buy<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Askar 203\/1421<\/strong> belongs to the absolute top class: one of the largest apochromatic refractors currently available. With a 203mm aperture and 1421mm focal length (f\/7), this is an instrument for observatories and high-end astrophotography, where light gathering power and resolution meet at the refractor level.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Observatory class, completely delivered<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The air-spaced triplet objective delivers color-corrected images across the entire field of view. Dovetail mounting rings, Losmandy dovetail, dew shield, and 2-inch and 1.25-inch adapters are included in the box, along with a carrying case. This instrument requires an observatory mount; plan your setup before ordering.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>In the box<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Optical tube 203\/1421 triplet with air-spaced objective<\/li>\n\n\n\n<li>Tube Rings<\/li>\n\n\n\n<li>Losmandy dovetail<\/li>\n\n\n\n<li>Dew cap<\/li>\n\n\n\n<li>Adapters for 2 inch and 1.25 inch<\/li>\n\n\n\n<li>Transport case<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">For whom yes, for whom no<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Who it's for: Observatories and professional setups that want to get the most out of a refractor. Who it's not for: Almost everyone else; for mobile or semi-fixed use, the 103 and 160 are the realistic choices.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Specifications<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Optical design<\/td><td>Apochromat, air-spaced triplet<\/td><\/tr><tr><td>Opening<\/td><td>203 mm<\/td><\/tr><tr><td>Focal length<\/td><td>1421 mm<\/td><\/tr><tr><td>Opening ratio<\/td><td>f\/7<\/td><\/tr><tr><td>Connection<\/td><td>2 inches and 1.25 inches<\/td><\/tr><tr><td>Attachment<\/td><td>Mounting rings with Losmandy dovetail<\/td><\/tr><tr><td>Execution<\/td><td>OTA (loose tube)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Unsure about the right tube for your camera and mount? The <a href=\"https:\/\/www.telescoop.nl\/en\/telescope-selection-aid\/\">telescope selection aid<\/a> helps you choose. Also view all <a href=\"https:\/\/www.telescoop.nl\/en\/telescopes\/refracting-telescopes\/\">Refracting telescopes<\/a> and the full range of <a href=\"https:\/\/www.telescoop.nl\/en\/brands\/askar\/\">Askar<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Askar 203\/1421: one of the largest apochromats available, f\/7 triplet class for observatories. Supplied with tube rings, Losmandy dovetail, dew shield, adapters, and carrying case.<\/p>","protected":false},"featured_media":27899,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1542],"product_cat":[567,428,3175,51],"product_tag":[],"class_list":["post-27894","product","type-product","status-publish","has-post-thumbnail","product_brand-askar","product_cat-refractor-telescopen","product_cat-telescopen-voor-astrofotografie","product_cat-refractor-ota","product_cat-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":27870,"url":"https:\/\/www.telescoop.nl\/en\/askar-ap-185-1295-triplet-ota\/","url_meta":{"origin":27894,"position":0},"title":"Askar AP 185\/1295 Triplet OTA","author":"Info telescoop","date":"02-09-2025","format":false,"excerpt":"Askar 185\/1295 Triplet: top-tier f\/7 apochromat for observatories and advanced astrophotography. Supplied with tube rings, Losmandy dovetail, handle, adapters, and transport case.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Askar AP 185\/1295 Triplet OTA","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-Refractor-AP-185-1295-Triplet-OTA.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-Refractor-AP-185-1295-Triplet-OTA.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-Refractor-AP-185-1295-Triplet-OTA.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-Refractor-AP-185-1295-Triplet-OTA.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-Refractor-AP-185-1295-Triplet-OTA.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-Refractor-AP-185-1295-Triplet-OTA.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":27849,"url":"https:\/\/www.telescoop.nl\/en\/askar-ap-160-1120-triplet-ota\/","url_meta":{"origin":27894,"position":1},"title":"Askar AP 160\/1120 Triplet OTA","author":"Info telescoop","date":"02-09-2025","format":false,"excerpt":"Askar 160\/1120 Triplet: top-class apochromatic refractor f\/7 for observatories and high-end astrophotography. Supplied with tube rings, Losmandy dovetail, handle, adapters, and transport case.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Askar AP 160\/1120 Triplet OTA","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-refractor-AP-160-1120-Triplet-OTA.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-refractor-AP-160-1120-Triplet-OTA.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-refractor-AP-160-1120-Triplet-OTA.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-refractor-AP-160-1120-Triplet-OTA.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-refractor-AP-160-1120-Triplet-OTA.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-Apochromatische-refractor-AP-160-1120-Triplet-OTA.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":92095,"url":"https:\/\/www.telescoop.nl\/en\/omegon-203-800-pro-astrograph-ota\/","url_meta":{"origin":27894,"position":2},"title":"Omegon 203\/800 Pro Astrograph Carbon OTA","author":"","date":"03-01-2026","format":false,"excerpt":"The Omegon Pro Astrograph 203\/800 Carbon comes with a carbon fiber tube, 2-inch Rack and Pinion focuser with M56, CNC tube rings, Losmandy dovetail, finder shoe, and dust cap: 8-inch deep-sky speed.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/01\/Omegon-Telescoop-Pro-Astrograph-Carbon-203-800-OTA-7.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":27954,"url":"https:\/\/www.telescoop.nl\/en\/askar-fma180-pro-40-180\/","url_meta":{"origin":27894,"position":3},"title":"Askar FMA180 Pro 40\/180 Apochromatic Refractor OTA","author":"Info telescoop","date":"04-09-2025","format":false,"excerpt":"Askar FMA180 Pro: 40\/180 f\/4.5 widefield apochromat with integrated flattener and 44 mm image circle for full-frame. Supplied with Vixen dovetail, tube rings, and finder shoe.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"Askar FMA180 Pro 40\/180","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-apochromatische-refractor-AP-40-180-FMA180PRO-OTA.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-apochromatische-refractor-AP-40-180-FMA180PRO-OTA.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-apochromatische-refractor-AP-40-180-FMA180PRO-OTA.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-apochromatische-refractor-AP-40-180-FMA180PRO-OTA.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-apochromatische-refractor-AP-40-180-FMA180PRO-OTA.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/09\/Askar-apochromatische-refractor-AP-40-180-FMA180PRO-OTA.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":27918,"url":"https:\/\/www.telescoop.nl\/en\/askar-ap-40-180-fma180-ota\/","url_meta":{"origin":27894,"position":4},"title":"Askar AP 40\/180 FMA180 OTA","author":"Info telescoop","date":"02-09-2025","format":false,"excerpt":"Askar FMA180: compact 40\/180 f\/4.5 apochromatic refractor with integrated corrector and T2 mount for widefield astrophotography. 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