{"id":18519,"date":"2026-09-30T01:14:11","date_gmt":"2026-09-29T23:14:11","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=18519"},"modified":"2026-11-14T11:53:55","modified_gmt":"2026-11-14T10:53:55","slug":"takahashi-tka68595","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/takahashi-tka68595\/","title":{"rendered":"Takahashi TKA68595 \u2013 1.5x extender for the Epsilon-180ED"},"content":{"rendered":"

Get a tighter frame with your Epsilon-180ED<\/h3>\n

The Takahashi TKA68595 extender increases the focal length of the Epsilon-180ED from 500 to 770 mm. This allows small objects to take up more space in the image, with a resulting aperture ratio of f\/4.3.<\/p>\n

Its specialized design, consisting of seven elements in five groups, corrects coma across a 44-mm image circle, suitable for the 24 \u00d7 36-mm format. The manufacturer also recommends visual use with the mounts indicated on the instrument\u2019s diagram.<\/p>\n

Assembly and Contents Included<\/h3>\n

The set includes the extender\u2019s two optical units: the corrector unit and the master unit, shown assembled in the photograph. It is mounted in place of the tube\u2019s original corrector. This version is designed specifically for the Epsilon-180ED.<\/p>\n

The input has an M68x0.75 male thread, and the output has an M54x0.75 female thread. The working distance to the sensor is 56.2 mm. For a camera, be sure to use the Takahashi wide-field adapter ring appropriate for its mount, sold separately. The assembly diagram specifies the connectors to use and the reference point from which this distance is measured.<\/p>\n

For filtration, Takahashi Europe recommends an internal filter or a camera filter wheel: an M48 filter screwed into the extender may cause reflections. With this setup, the filter is no longer mounted in the standard wide-field ring. Be sure to account for the thickness of the camera and filter wheel adapters in your mounting design.<\/p>\n

Features<\/h3>\n\n\n\n\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>\nTKA68595<\/td>\n<\/tr>\n
Resulting focus<\/th>\n770 mm<\/td>\n<\/tr>\n
Resulting F\/D ratio<\/th>\nF\/D 4.3<\/td>\n<\/tr>\n
Corrected Image Circle Diameter<\/th>\n44 mm<\/td>\n<\/tr>\n
Backfocus<\/th>\n56.2 mm<\/td>\n<\/tr>\n
Compatible instruments<\/th>\nTakahashi Epsilon-180ED<\/td>\n<\/tr>\n
Design<\/th>\n7 lenses in 5 groups<\/td>\n<\/tr>\n
Mechanical Input Interface<\/th>\nM68x0.75 male thread<\/td>\n<\/tr>\n
Mechanical Output Interface<\/th>\nM54 x 0.75 female<\/td>\n<\/tr>\n
Mechanical draw<\/th>\n45.2 mm<\/td>\n<\/tr>\n
Mechanical diameter<\/th>\n78.5 mm<\/td>\n<\/tr>\n
Mechanical Length<\/th>\n105.5 mm<\/td>\n<\/tr>\n
Weight<\/th>\n550 g<\/td>\n<\/tr>\n
Composition<\/th>\nCorrection Unit and Master Unit of the Extender<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

A dedicated extender for the Epsilon-180ED, designed to extend its focal length to 770 mm at f\/4.3. It has a corrected image circle of 44 mm and a sensor distance of 56.2 mm.<\/p>","protected":false},"featured_media":18517,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[947],"product_cat":[369],"product_tag":[],"class_list":["post-18519","product","type-product","status-publish","has-post-thumbnail","product_brand-takahashi","product_cat-barlows","first","on_supplier","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/18519","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=18519"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/18517"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=18519"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=18519"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=18519"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=18519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}