{"id":18425,"date":"2026-09-29T15:40:31","date_gmt":"2026-09-29T13:40:31","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=18425"},"modified":"2026-11-14T11:22:10","modified_gmt":"2026-11-14T10:22:10","slug":"takahashi-tka00580m","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/takahashi-tka00580m\/","title":{"rendered":"Takahashi Multi Reducer 0.85\u00d7-M for FCT-65D and FC-50"},"content":{"rendered":"

Function and Use<\/h3>\n

The 0.85\u00d7-M Multi Reducer expands the FCT-65D\u2019s field of view by reducing its focal length from 400 to 340 mm, at an F\/D ratio of 5.2. Its four-element, three-group design provides a 44-mm image circle suitable for full-frame cameras. This intermediate focal length allows for a different framing than that offered by the FU reducer and the FC\/FS 1.04\u00d7 corrector.<\/p>\n

Compatibility and Installation<\/h3>\n

The M version includes its own dedicated CA ring and is compatible with the FCT-65D as well as the FC-50 when used with the adapters provided by Takahashi. On the FCT-65D, the diagram shows the rotating collar, the reducer with its CA ring, and then a DX-60W photo ring adapted to the camera body. The M52 \u00d7 0.75 thread indicated on the camera side corresponds to the back of the supplied CA ring.<\/p>\n

Features<\/h3>\n\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>\nTKA00580M<\/td>\n<\/tr>\n
Version<\/th>\n0.85\u00d7 Multi Reducer-M<\/td>\n<\/tr>\n
Construction<\/th>\n4 lenses in 3 groups<\/td>\n<\/tr>\n
Instruments<\/th>\nFCT-65D, FC-50<\/td>\n<\/tr>\n
With the FCT-65D<\/th>\n340 mm, F\/D 5.2<\/td>\n<\/tr>\n
With FC-50<\/th>\n340 mm, F\/D 6.8<\/td>\n<\/tr>\n
Image circle<\/th>\n44 mm<\/td>\n<\/tr>\n
Diameter and Length<\/th>\n60 mm and 54.7 mm<\/td>\n<\/tr>\n
Thread on the instrument side<\/th>\nM55.9 \u00d7 0.75<\/td>\n<\/tr>\n
Thread on the camera side, CA ring<\/th>\nM52 \u00d7 0.75<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

0.85\u00d7-M reducer with dedicated CA ring: 340 mm focal length at F\/D 5.2 on the FCT-65D and a 44 mm image circle.<\/p>","protected":false},"featured_media":18420,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[947],"product_cat":[650],"product_tag":[],"class_list":["post-18425","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\/18425","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=18425"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/18420"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=18425"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=18425"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=18425"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=18425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}