{"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":"2026-03-04T17:11:14","modified_gmt":"2026-03-04T16:11:14","slug":"william-optics-fluorostar-120-780-apo-space-gray-ota","status":"publish","type":"product","link":"https:\/\/staging.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":"<h3 class=\"wp-block-heading\">Bright, sharp and colorful image<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The William Optics 120\/780 gives you an image that looks instantly calm and natural. The triplet lens of FPL-53 and lanthanum glass keeps color errors under control, so stars remain true dots. You see binary stars separate from each other, with no ragged edges. Jupiter shows cloud bands and Saturn shows a sharp ring structure that looks like you're flying right past it. The image remains bright to the edges, so you see more detail without effort.<\/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 aligncenter size-large\"><img decoding=\"async\" data-id=\"33812\" src=\"https:\/\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Space-Gray-OTA-3.jpg\" alt=\"William Optics 120\/780 OTA with Losmandy dovetail, handle and Bahtinov mask.\" class=\"wp-image-33812\" title=\"\"><\/figure>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">More light for deep objects<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The large aperture lets a lot of light through. As a result, you see nebulae, galaxies and clusters with more contrast and structure. Because there is no central obstruction, the image remains purer than with many reflector telescopes. This helps you notice fine differences so you can look longer and more relaxed. Anyone who ever looks through a high-quality apochromatic will immediately notice how much tranquility such an image provides.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ready for strong astrophotography<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The 120\/780 delivers a large image circle that also beautifully highlights full-frame cameras. Combined with the William Optics Flat7A, you shoot at f\/5.6, allowing for shorter exposures and less noise. You screw the flattener directly onto the focuser, so the camera is firmly attached and your photos stay consistently sharp. Angles stay flat, so you spend less time in post-processing.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" data-id=\"33811\" src=\"https:\/\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Space-Gray-OTA-2.jpg\" alt=\"William Optics 120\/780 triplet objective lens FPL-53 close-up with multicoating.\" class=\"wp-image-33811\" title=\"\"><\/figure>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Accurate focusing, even on faint stars<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The focuser feels smooth and responds precisely. The fine 1:10 setting helps you find sharpness down to the smallest detail. Even when using a heavy camera, the focuser remains stable. You can rotate the entire unit to neatly straighten your framing. The included Bahtinov mask makes focusing easy. The acrylic allows a lot of light to pass through, giving even faint stars a clear pattern.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cleverly built and easy to use<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The Space Gray tube feels sturdy and is designed to last for years. The integrated handle allows you to safely lift and assemble the telescope without fuss. The bag protects the tube on the go and keeps everything organized. You can easily fit accessories such as a viewfinder or guide scope via the Vixen\/Skywatcher-style connector. That way you put together your setup exactly the way you want it.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>Specifications<\/strong><\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Optics<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th>Description<\/th><\/tr><\/thead><tbody><tr><td>Type<\/td><td>Refractor<\/td><\/tr><tr><td>Design<\/td><td>Apochromat<\/td><\/tr><tr><td>Aperture (mm)<\/td><td>120<\/td><\/tr><tr><td>Focal length (mm)<\/td><td>780<\/td><\/tr><tr><td>Focal Ratio (f\/)<\/td><td>6,5<\/td><\/tr><tr><td>Resolution<\/td><td>1,15\u2033<\/td><\/tr><tr><td>Limit value (mag)<\/td><td>12,3<\/td><\/tr><tr><td>Light output<\/td><td>290\u00d7 to eye<\/td><\/tr><tr><td>Max. useful magnification<\/td><td>240\u00d7<\/td><\/tr><tr><td>Lens Design<\/td><td>Triplet<\/td><\/tr><tr><td>Tube weight (kg)<\/td><td>7,2<\/td><\/tr><tr><td>Tube diameter (mm)<\/td><td>126<\/td><\/tr><tr><td>Tube length (mm)<\/td><td>850<\/td><\/tr><tr><td>Transport length (mm)<\/td><td>680<\/td><\/tr><tr><td>Coating<\/td><td>STM<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Focuser<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th>Description<\/th><\/tr><\/thead><tbody><tr><td>Design<\/td><td>Rack &amp; pinion<\/td><\/tr><tr><td>Ocular connection<\/td><td>2\u2033<\/td><\/tr><tr><td>Camera connection<\/td><td>T2<\/td><\/tr><tr><td>Free opening (mm)<\/td><td>83<\/td><\/tr><tr><td>Reduction<\/td><td>1:10<\/td><\/tr><tr><td>Adjustment range (mm)<\/td><td>95<\/td><\/tr><tr><td>Rotatable<\/td><td>Yes<\/td><\/tr><tr><td>Telescope side connection<\/td><td>3,3\u2033<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Mount<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th>Description<\/th><\/tr><\/thead><tbody><tr><td>Design<\/td><td>OTA<\/td><\/tr><tr><td>Type of mount<\/td><td>Without<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Included accessories<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Section<\/th><th>Description<\/th><\/tr><\/thead><tbody><tr><td>Divergent optics<\/td><td>No<\/td><\/tr><tr><td>Dovetail<\/td><td>Losmandy-style<\/td><\/tr><tr><td>Handle<\/td><td>Yes<\/td><\/tr><tr><td>Focusing aid<\/td><td>Bahtinov mask<\/td><\/tr><tr><td>Transport bag<\/td><td>Yes<\/td><\/tr><tr><td>Accessory shoe<\/td><td>Vixen\/Skywatcher<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">General<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th>Description<\/th><\/tr><\/thead><tbody><tr><td>Series<\/td><td>FluoroStar<\/td><\/tr><tr><td>Color<\/td><td>Space Gray<\/td><\/tr><tr><td>Application<\/td><td>Astrophotography, Moon &amp; Planets, Deep-sky<\/td><\/tr><tr><td>Sun<\/td><td>Only with safe filters<\/td><\/tr><tr><td>Recommended for<\/td><td>Advanced<\/td><\/tr><tr><td>Observatory use<\/td><td>Yes<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"<p>William Optics 120\/780 comes with Bahtinov focus mask, Losmandy swallowtail, handle, Vixen\/Skywatcher accessory shoe and padded transport bag - premium triplet for crystal clear astrophotos and visual excellence. \u00a0<\/p>","protected":false},"featured_media":97320,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[643],"product_cat":[51,567],"product_tag":[],"class_list":["post-33809","product","type-product","status-publish","has-post-thumbnail","product_brand-william-optics","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":33788,"url":"https:\/\/staging.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":"William Optics 120\/780 comes with a Losmandy-style dovetail, handle, Bahtinov mask, transport bag and a Vixen\/Skywatcher accessory shoe - perfect for the serious astrophotographer who strives for color-clean and razor-sharp images. \u00a0","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\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Gold-OTA-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Gold-OTA-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Gold-OTA-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Gold-OTA-2.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":33800,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-fluorostar-120-780-apo-red-ota\/","url_meta":{"origin":33809,"position":1},"title":"William Optics Fluorostar 120\/780 APO Red OTA","author":"","date":"14-11-2025","format":false,"excerpt":"William Optics 120\/780 comes with a Losmandy-style dovetail, handle, a special Bahtinov mask for perfect focusing, a Vixen\/Skywatcher accessory shoe and a soft transport bag for safe storage and transportation. \u00a0","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\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Red-OTA-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Red-OTA-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Red-OTA-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Red-OTA-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":33751,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-fluorostar-132-925-refractor-apo-red-ota\/","url_meta":{"origin":33809,"position":2},"title":"William Optics Fluorostar 132\/925 Refractor APO Red OTA","author":"","date":"14-11-2025","format":false,"excerpt":"William Optics AP 132\/925 comes with Bahtinov focus mask, 3.7\" rotary focuser with 1:10 fine adjustment, Losmandy swallowtail, handle and padded transport bag - a top-of-the-line FPL-53 triplet for razor-sharp astrophotos and visual deep-sky observations. \u00a0","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\/11\/William-Optics-AP-132-925-Apochromatische-refractor-FluoroStar-Red-OTA-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-FluoroStar-Red-OTA-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-FluoroStar-Red-OTA-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-FluoroStar-Red-OTA-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":33761,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-fluorostar-132-925-refractor-apo-space-gray-ota\/","url_meta":{"origin":33809,"position":3},"title":"William Optics Fluorostar 132\/925 Refractor APO Space Gray OTA","author":"","date":"14-11-2025","format":false,"excerpt":"William Optics AP 132\/925 comes with a Losmandy-style dovetail, handle, Bahtinov mask, transport bag and a Vixen\/Skywatcher accessory shoe - a top-notch instrument for color-clean and razor-sharp astrophotography and deep-sky observations. \u00a0","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\/11\/William-Optics-AP-132-925-Apochromatische-refractor-Fluorostar-Space-Gray-OTA-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-Fluorostar-Space-Gray-OTA-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-Fluorostar-Space-Gray-OTA-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-Fluorostar-Space-Gray-OTA-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":33734,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-fluorostar-132-925-refractor-apo-gold-ota\/","url_meta":{"origin":33809,"position":4},"title":"William Optics Fluorostar 132\/925 Refractor APO Gold OTA","author":"","date":"14-11-2025","format":false,"excerpt":"William Optics AP 132\/925 comes with a Losmandy-style dovetail, handle, an innovative Bahtinov mask, a Vixen\/Skywatcher accessory shoe and a convenient transport bag for optimal protection and ease of use. \u00a0","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\/11\/William-Optics-AP-132-925-Apochromatische-refractor-Fluorostar-Gold-OTA-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-Fluorostar-Gold-OTA-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-Fluorostar-Gold-OTA-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-132-925-Apochromatische-refractor-Fluorostar-Gold-OTA-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":33829,"url":"https:\/\/staging.telescoop.nl\/en\/william-optics-granturismo-81-478-apo-iv-gold-ota\/","url_meta":{"origin":33809,"position":5},"title":"William Optics GranTurismo 81\/478 APO IV Gold OTA","author":"","date":"15-11-2025","format":false,"excerpt":"William Optics AP 81\/478 81 comes with a Vixen-Style dovetail, handle, Bahtinov mask, 2\" to 1.25\" adapter and a soft carrying case, ideal for mobile astrophotography. \u00a0","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\/11\/William-Optics-AP-81-478-81-Apochromatische-refractor-Gran-Turismo-IV-OTA-2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-81-478-81-Apochromatische-refractor-Gran-Turismo-IV-OTA-2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-81-478-81-Apochromatische-refractor-Gran-Turismo-IV-OTA-2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-AP-81-478-81-Apochromatische-refractor-Gran-Turismo-IV-OTA-2.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/33809","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/comments?post=33809"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/97320"}],"wp:attachment":[{"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=33809"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=33809"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=33809"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/staging.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=33809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}