{"id":18223,"date":"2026-09-29T01:00:20","date_gmt":"2026-09-28T23:00:20","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&#038;p=18223"},"modified":"2026-11-14T12:29:35","modified_gmt":"2026-11-14T11:29:35","slug":"takahashi-fsq-85edx-tube-seul","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/takahashi-fsq-85edx-tube-seul\/","title":{"rendered":"Takahashi FSQ-85EDX \u2013 85 mm telescope tube only"},"content":{"rendered":"<div class=\"product\"><div class=\"product\"><h3>A compact telescope for deep-sky photography<\/h3>\n<p>The Takahashi FSQ-85EDX is designed for wide-field imaging. Its 85 mm Petzval objective consists of four elements, including two made of S-FPL53 ED glass, and offers a native focal length of 450 mm at an F\/D ratio of 5.3. This optical design produces a flat field well-suited for astrophotography. The short focal length makes it easy to frame large nebulae and expansive star fields, while keeping the telescope tube portable.<\/p>\n<h3>The 1.01\u00d7 corrector is included<\/h3>\n<p>The corrector supplied with the telescope is designed for use with small-pixel sensors. With this component, the focal length reaches 455 mm at F\/D 5.4, and the corrected image circle measures 44 mm. The working distance indicated on the back of the corrector is 56.2 mm; adapter rings should be selected according to the Takahashi system and your camera\u2019s flange focal distance.<\/p>\n<h3>Focus and Framing<\/h3>\n<p>The rack has a 1:7 gear ratio for fine-tuning the focus. The included CAA rotating collar allows you to adjust the camera\u2019s framing. The retractable dew shield reduces the tube length from 623 to 535 mm for easier storage and transport.<\/p>\n<h3>Delivered Contents and Assembly<\/h3>\n<p>FSQ-85EDX optical tube with a 1.01\u00d7 corrector and CAA rotating collar. For this tube-only version, the finder scope, its mount, and the mounting collar with offset plate must be purchased separately.<\/p>\n<h3>Accessories to customize your setup<\/h3>\n<ul>\n<li><strong>Expanding the scope of photography:<\/strong> the <a href=\"https:\/\/deep-space-astronomy.ch\/en\/product\/takahashi-qb073x-fsq85edx\/\">QB0.73X TKA37580 gearbox<\/a> brings the focal length to 330 mm at F\/D 3.9. It screws onto the rotating collar and can be used as an alternative to the included 1.01\u00d7 corrector, according to the 2023 FSQ-85EDX assembly diagram. For a photographic setup with a wide-field T-ring, use the CA-35 SKY-90 TKA35201 adapter at the output of the reducer, followed by the connectors corresponding to the camera body or camera. The focal length is calculated based on the interface actually used.<\/li>\n<li><strong>Attach the tube to the mount:<\/strong> the <a href=\"https:\/\/deep-space-astronomy.ch\/en\/product\/takahashi-tka21420-collier\/\">95S TKA21420 one-piece collar<\/a> is designed for the FSQ-85EDX. It attaches to a Takahashi mount using two M8 screws; for other mounts, choose a mounting plate or dovetail with compatible mounting holes. The clamp and mounting interface complete this tube-only version.<\/li>\n<\/ul>\n<p>These accessories are sold separately. The QB0.73X reducer corresponds to a different optical configuration: it cannot be used in combination with the 1.01\u00d7 corrector.<\/p>\n<p><a href=\"https:\/\/takahashi-europe.com\/catalog\/lunettes-astronomiques\/astrographes-grand-champ-lunettes\/fsq-85edx\/lunette-fsq-85edx-tube-seul?lang=fr\" target=\"_blank\" rel=\"noopener\">Takahashi FSQ-85EDX Overview and Documentation<\/a><\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Capture wide fields of the deep sky with the Takahashi FSQ-85EDX: an 85 mm ED quadruplet with a 1.01\u00d7 corrector included and a corrected field of 44 mm. The 1\/7 focus ratio and CAA rotating collar make focusing and framing easy. Tube-only version.<\/p>","protected":false},"featured_media":18221,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[947],"product_cat":[755],"product_tag":[],"class_list":["post-18223","product","type-product","status-publish","has-post-thumbnail","product_brand-takahashi","product_cat-lunettes-apochromatiques","first","on_supplier","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/18223","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/comments?post=18223"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/18221"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=18223"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=18223"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=18223"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=18223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}