{"id":18038,"date":"2026-09-28T10:27:04","date_gmt":"2026-09-28T08:27:04","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=18038"},"modified":"2026-11-14T11:51:40","modified_gmt":"2026-11-14T10:51:40","slug":"takahashi-tka37582","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/takahashi-tka37582\/","title":{"rendered":"Takahashi FL1.01X: Field Corrector for the FSQ-85EDX"},"content":{"rendered":"

Complete the FSQ-85EDX for imaging<\/h3>\n

The Takahashi FL1.01X, part number TKA37582, is an additional corrector designed for the FSQ-85EDX refractor. Its purpose is to improve the edge-of-field correction of this Petzval refractor, particularly when used with large sensors. It should not be confused with a focal reducer intended for another Takahashi configuration.<\/p>\n

A correction announced for 44 mm<\/h3>\n

According to the manufacturer, the corrected image circle measures 44 mm; this accessory is designed for full-frame coverage. The 1.01x optical factor slightly increases the focal length: Takahashi lists 455 mm and an F\/D ratio of 5.4 for the FSQ-85EDX when equipped with this accessory. These values apply to the documented combination with this telescope, not to the corrector used on its own.<\/p>\n

A fully threaded assembly<\/h3>\n

The corrector\u2019s inlet uses an M72x1 male thread. The manufacturer\u2019s specifications indicate an M54x0.75 outlet\u2014female, according to the table\u2014and a female threaded socket on the front for M58 filters. Before selecting fittings, check the direction and dimensions of the threads on each component; the diameter alone is not sufficient to define a complete assembly.<\/p>\n

Maintain the working distance<\/h3>\n

The required backfocus behind the corrector is 56.2 mm. The value of 36 mm corresponds to the mechanical extension shown separately in the French data sheet; it is not the distance to the sensor. With a mechanical diameter of 80 mm, a length of 41 mm, and a stated weight of 200 g, this accessory must be factored into the mounting calculation. Make sure to include the necessary adapters for your camera and verify that they are included: their presence cannot be inferred from the photograph of the corrector.<\/p>\n

Technical specifications<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Features<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Reference<\/th>\nTKA37582<\/td>\n<\/tr>\n
Corrected image circle<\/th>\n44 mm<\/td>\n<\/tr>\n
Mechanical backfocus<\/th>\n56.2 mm<\/td>\n<\/tr>\n
Mechanical Input Interface<\/th>\nM72x1 male thread<\/td>\n<\/tr>\n
Mechanical Output Interface<\/th>\nM54x0.75; female<\/td>\n<\/tr>\n
Circulation<\/th>\n36 mm<\/td>\n<\/tr>\n
Mechanical diameter<\/th>\n80 mm<\/td>\n<\/tr>\n
Mechanical Length<\/th>\n41 mm<\/td>\n<\/tr>\n
Weight<\/th>\n200 g<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Manufacturer's source<\/h3>\n

View the Takahashi product page for the FL1.01X Field Corrector (FSQ-85EDX)<\/a>.<\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

A corrector designed specifically for the FSQ-85EDX, with a corrected image circle of 44 mm and a backfocus of 56.2 mm. Magnification factor: 1.01x; M72x1 threaded mount on the input side.<\/p>","protected":false},"featured_media":18035,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[947],"product_cat":[650],"product_tag":[],"class_list":["post-18038","product","type-product","status-publish","has-post-thumbnail","product_brand-takahashi","product_cat-rducteurs-correcteurs-ap","first","on_supplier","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/18038","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=18038"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/18035"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=18038"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=18038"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=18038"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=18038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}