{"id":33800,"date":"2025-11-14T17:25:19","date_gmt":"2025-11-14T16:25:19","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=33800"},"modified":"2026-05-18T16:10:43","modified_gmt":"2026-05-18T14:10:43","slug":"william-optics-fluorostar-120-780-apo-red-ota","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/william-optics-fluorostar-120-780-apo-red-ota\/","title":{"rendered":"William Optics Fluorostar 120\/780 APO Red OTA"},"content":{"rendered":"<h3 class=\"wp-block-heading\">Clear image with deep colors<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>William Optics 120\/780<\/strong> instantly gives you a calm, clear and colorfast image. The triplet of FPL-53 and lanthanum glass ensures that stars remain sharp points without color errors. While viewing, you see double stars nicely separated and small details on Jupiter and Saturn are immediately noticeable. Saturn's rings seem almost within reach due to the high contrast and natural color reproduction.<\/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=\"33801\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Red-OTA-1.jpg\" alt=\"William Optics 120\/780 Apochromatic refractor with all included accessories including transport bag, dovetail and Bahtinov mask.\" class=\"wp-image-33801\" title=\"\"><\/figure>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">More light, more detail<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Thanks to the 120 mm aperture, a lot of light falls in. As a result, you see deep nebulae and star clusters with more structure and softer transitions. Because there is no central obstruction, the image remains even more contrasty. This helps you distinguish both bright planets and deep-sky objects with ease. The image remains stable and calm even at higher magnifications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Strong in astrophotography<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For photography, this telescope is a real powerhouse. Its large image circle makes it suitable for full-frame cameras. When you use the <strong>Flat7A flattener<\/strong> you'll be working with a fast f\/5.6 ratio, giving ideal conditions for short exposures and sharp corners. The flattener screws securely and precisely onto the focuser, keeping your setup stable and your results more even.<\/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=\"33807\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-120-780-Apochromatische-refractor-AP-Fluorostar-Red-OTA-7.jpg\" alt=\"William Optics 120\/780 close-up of the 1:10 fine-motion focusing knob and integrated temperature display.\" class=\"wp-image-33807\" title=\"\"><\/figure>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Easy focusing, even on faint stars<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The focuser works smoothly and accurately. With the fine 1:10 adjustment, you'll find the sharp point effortlessly, even when using heavy cameras. You can easily rotate the focuser to choose a fine angle of view without detaching the camera. The included Bahtinov mask has a bright pattern, giving even dim stars enough light to focus quickly and precisely.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cleverly designed and ready to use<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The tube feels solid and remains comfortable to use. The integrated handle helps you carry and mount the telescope safely. The carrying bag protects the telescope on the go and keeps everything organized. Thanks to the accessory shoe, you can easily mount a viewfinder or other accessories when you want to expand your setup.<\/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>Red<\/td><\/tr><tr><td>Observation goals<\/td><td>Astrophotography, Moon &amp; Planetary, Deep-sky<\/td><\/tr><tr><td>Sun<\/td><td>Only with safe filter<\/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 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<\/p>","protected":false},"featured_media":97310,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[643],"product_cat":[51,3175,567],"product_tag":[],"class_list":["post-33800","product","type-product","status-publish","has-post-thumbnail","product_brand-william-optics","product_cat-telescopen","product_cat-refractor-ota","product_cat-refractor-telescopen","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":105543,"url":"https:\/\/www.telescoop.nl\/en\/levenhuk-skyline-travel-70\/","url_meta":{"origin":33800,"position":0},"title":"Levenhuk Skyline Travel 70 - 70\/400 Refractor","author":"Abdullah Ibrar","date":"03-04-2026","format":false,"excerpt":"The Levenhuk Skyline Travel 70 \u2013 70\/400 Refractor comes with 10mm and 20mm eyepieces, a 3x Barlow lens, a 5x24 finderscope, a diagonal prism, an aluminum tripod, and a backpack. 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