{"id":33809,"date":"2025-11-14T17:38:48","date_gmt":"2025-11-14T16:38:48","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=33809"},"modified":"2026-10-13T11:15:20","modified_gmt":"2026-10-13T09:15:20","slug":"william-optics-fluorostar-120-780-apo-space-gray-ota","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/william-optics-fluorostar-120-780-apo-space-gray-ota\/","title":{"rendered":"William Optics Fluorostar 120\/780 APO Space Gray OTA"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>Fluorostar 120 in Space Gray: triplet with lanthanum glass<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>William Optics Fluorostar 120 Space Gray<\/strong> delivers a calm, clear, and true-to-color image. The triplet lens made of FPL-53 and lanthanum glass keeps stars point-like without chromatic aberration: double stars appear beautifully separated, and cloud bands and ring structure are immediately noticeable on Jupiter and Saturn.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"33812\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Space-Gray-OTA-3.jpg\" alt=\"William Optics Fluorostar 120 Space Gray apochromatic triplet refractor, full view\" class=\"wp-image-33812\" title=\"\"><\/figure>\n<\/figure>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8d39b2df wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Space-Gray-OTA-2.jpg\" alt=\"The Fluorostar 120 Space Gray with Losmandy dovetail and handle\" class=\"wp-image-33811\" title=\"\"><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h4 class=\"wp-block-heading\">Lots of light for deep-sky and planets<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The 120mm aperture at a 780mm focal length (f\/6.5) captures a lot of light: short exposures for nebulae and galaxies, and enough resolution for serious planetary work, visually and photographically. The Losmandy dovetail securely mounts the tube on a medium-duty equatorial mount, the Vixen\/Sky-Watcher accessory shoe accepts the guidescope, and the Bahtinov mask makes focusing precise.<\/p>\n<\/div>\n<\/div>\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 Fluorostar 120\/780 triplet, Space Gray<\/li>\n\n\n\n<li>Losmandy-style dovetail<\/li>\n\n\n\n<li>Handle<\/li>\n\n\n\n<li>Vixen\/Sky-Watcher accessory shoe<\/li>\n\n\n\n<li>Bahtinov mask<\/li>\n\n\n\n<li>Padded transport bag<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Featured accessories<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.telescoop.nl\/en\/telescope-accessories\/astro-photography\/other-astrophotography-accessories\/\">William Optics Flat68III flattener<\/a> (\u20ac869) levels the field to full-frame; a UniGuide 50mm guidescope (from \u20ac189) enables long exposures.<\/p>\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\">Good for: serious astrophotographers and visual observers looking for a large triplet that can handle both disciplines. Not for: anyone looking for a more compact travel scope; the Fluorostar 91 or the ZenithStar 81 WIFD are more manageable in that case.<\/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, FPL-53 triplet with lanthanum glass<\/td><\/tr><tr><td>Opening<\/td><td>120 mm<\/td><\/tr><tr><td>Focal length<\/td><td>780 mm<\/td><\/tr><tr><td>Opening ratio<\/td><td>f\/6,5<\/td><\/tr><tr><td>Attachment<\/td><td>Losmandy-style dovetail with handle<\/td><\/tr><tr><td>Accessory shoe<\/td><td>Vixen\/Sky-Watcher<\/td><\/tr><tr><td>Focus assist<\/td><td>Bahtinov mask<\/td><\/tr><tr><td>Execution<\/td><td>OTA (loose tube), Space Gray<\/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\/william-optics\/\">William Optics<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p><strong>This is just the tube (OTA), without mounting and tripod.<\/strong> You can choose the appropriate mounting and the accessories that come with it below.<\/p>\n<p>William Optics Fluorostar 120 Space Gray: FPL-53 triplet apochromat 120\/780 f\/6.5 with lanthanum glass. Supplied with Losmandy dovetail, carrying handle, accessory shoe, Bahtinov mask, and transport bag.<\/p>","protected":false},"featured_media":97320,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[643],"product_cat":[51,428,3175,567],"product_tag":[3352,3353],"class_list":["post-33809","product","type-product","status-publish","has-post-thumbnail","product_brand-william-optics","product_cat-telescopen","product_cat-telescopen-voor-astrofotografie","product_cat-refractor-ota","product_cat-refractor-telescopen","product_tag-sterrenkijker","product_tag-sterrenkijkers","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":[27720,27759,32949,34220,15860,34298,34033,33941,33946,34072],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":33788,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-fluorostar-120-780-apo-gold-ota\/","url_meta":{"origin":33809,"position":0},"title":"William Optics Fluorostar 120\/780 APO Gold OTA","author":"","date":"14-11-2025","format":false,"excerpt":"This is just the tube (OTA), without mounting and tripod. You can choose the appropriate mounting and the accessories that come with it below. William Optics Fluorostar 120 Gold: FPL-53 triplet apochromatic 120\/780 f\/6.5 with lanthanoid glass. Supplied with Losmandy dovetail, handle, accessory shoe, Bahtinov mask and carrying bag.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Gold-OTA-3.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33784,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-91-540-refractor-apo-space-gray-ota\/","url_meta":{"origin":33809,"position":1},"title":"William Optics Fluorostar 91\/540 Refractor APO Space Gray OTA","author":"","date":"14-11-2025","format":false,"excerpt":"This is just the tube (OTA), without the mounting and tripod. You can choose the appropriate mounting and the accessories that come with it below. William Optics Fluorostar 91 Space Gray: FPL-53 apochromatic triplet 91\/540 f\/5.9 with lanthanum glass and 1:10 focuser. Supplied with dew cap, Losmandy-owl-tail mount, handle, Bahtinov mask and luxury carrying case.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-91-540-Apochromatische-refractor-Space-Gray-OTA-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33800,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-fluorostar-120-780-apo-red-ota\/","url_meta":{"origin":33809,"position":2},"title":"William Optics Fluorostar 120\/780 APO Red OTA","author":"","date":"14-11-2025","format":false,"excerpt":"This is just the tube (OTA), without mounting and tripod. You can choose the appropriate mounting and the accessories that come with it below. William Optics Fluorostar 120 Red: FPL-53 triplet apochromatic 120\/780 f\/6.5 with lanthanum glass. Supplied with Losmandy dovetail mount, handle, accessory shoe, Bahtinov mask and carrying bag.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Red-OTA-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33767,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-fluorostar-156-1217-refractor-apo-space-gray-ota\/","url_meta":{"origin":33809,"position":3},"title":"William Optics Fluorostar 156\/1217 Refractor APO Space Gray OTA","author":"","date":"14-11-2025","format":false,"excerpt":"This is just the tube (OTA), without the mount and tripod. You can choose the appropriate mount and the accessories that come with it below. William Optics Fluorostar 156 Space Gray: FPL-53 triplet apochromatic 156\/1217 f\/7.8 with lanthanum coating. The flagship Fluorostar for deep-sky and planetary observations, with Losmandy dovetail mount, RotoLock and Bahtinov mask.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-156-1217-Apochromatische-refractor-Fluorostar-Gray-OTA-3.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33761,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-fluorostar-132-925-refractor-apo-space-gray-ota\/","url_meta":{"origin":33809,"position":4},"title":"William Optics Fluorostar 132\/925 Refractor APO Space Gray OTA","author":"","date":"14-11-2025","format":false,"excerpt":"This is just the tube (OTA), without mounting and tripod. You can choose the appropriate mounting and the accessories that come with it below. William Optics Fluorostar 132 Space Gray: FPL-53 triplet apochromatic 132\/925 f\/7 with a lens hood and 3.7 inch rotatable viewfinder. Supplied with Losmandy dovetail mount, handle, accessory shoe, Bahtinov mask and carrying bag.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-Fluorostar-Space-Gray-OTA-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33734,"url":"https:\/\/www.telescoop.nl\/en\/william-optics-fluorostar-132-925-refractor-apo-gold-ota\/","url_meta":{"origin":33809,"position":5},"title":"William Optics Fluorostar 132\/925 Refractor APO Gold OTA","author":"","date":"14-11-2025","format":false,"excerpt":"This is just the tube (OTA), without mounting and tripod. You can choose the appropriate mounting and the accessories that come with it below. William Optics Fluorostar 132 Gold: FPL-53 triplet apochromatic 132\/925 f\/7 with lanthanoid glass and 3.7 inch rotative focus. Supplied with Losmandy dovetail, handle, accessory shoe, Bahtinov mask and transport bag.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-Fluorostar-Gold-OTA-12.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/33809","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=33809"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/97320"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=33809"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=33809"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=33809"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=33809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}