{"id":18339,"date":"2026-09-29T10:16:02","date_gmt":"2026-09-29T08:16:02","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&#038;p=18339"},"modified":"2026-11-14T11:43:18","modified_gmt":"2026-11-14T10:43:18","slug":"takahashi-tka28595","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/takahashi-tka28595\/","title":{"rendered":"Takahashi TKA28595 \u2013 FOA-60 to FOA-60Q conversion kit, 1.7\u00d7 magnification"},"content":{"rendered":"<div class=\"product\"><div class=\"product\"><h3>FOA-60 to FOA-60Q Conversion Kit, R 1.7\u00d7<\/h3>\n<p>The Takahashi R 1.7\u00d7 extender extends the FOA-60\u2019s focal length to 900 mm, resulting in an F\/D ratio of 15, to match the optical configuration of the FOA-60Q. Its four lenses in two groups improve correction across the entire field of view and allow it to be used for both observation and photography. The specified image circle measures 44 mm.<\/p>\n<h3>Compatibility and Installation<\/h3>\n<p>The extender screws between the FOA-60\u2019s objective lens and its eyepiece holder. It is intended for owners of this telescope who wish to upgrade to the Q configuration. To connect a camera or video camera, refer to the FOA-60Q diagram.<\/p>\n<h3>Features<\/h3>\n<table style=\"width:100%;max-width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"padding:8px;text-align:left\">Features<\/th>\n<th style=\"padding:8px;text-align:left\">Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th style=\"padding:8px;text-align:left\">Reference<\/th>\n<td style=\"padding:8px;text-align:left\">TKA28595<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:8px;text-align:left\">Type<\/th>\n<td style=\"padding:8px;text-align:left\">R 1.7\u00d7 Extender<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:8px;text-align:left\">Starting Lens<\/th>\n<td style=\"padding:8px;text-align:left\">FOA-60<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:8px;text-align:left\">Configuration Achieved<\/th>\n<td style=\"padding:8px;text-align:left\">FOA-60Q<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:8px;text-align:left\">Resulting focus<\/th>\n<td style=\"padding:8px;text-align:left\">900 mm<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:8px;text-align:left\">Resulting focal ratio<\/th>\n<td style=\"padding:8px;text-align:left\">F\/D 15<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:8px;text-align:left\">Extender Formula<\/th>\n<td style=\"padding:8px;text-align:left\">4 lenses in 2 groups<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:8px;text-align:left\">Image circle<\/th>\n<td style=\"padding:8px;text-align:left\">44 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><a href=\"https:\/\/takahashi-europe.com\/assets\/uploads\/CATALOGUES\/Takahashi_English_catalogue_2025%20.pdf#page=23\" target=\"_blank\" rel=\"noopener\">Takahashi Catalog and Assembly Diagram<\/a><\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>1.7\u00d7 R extender to convert an FOA-60 to an FOA-60Q: 900 mm at F\/D 15, four elements in two groups, and a 44 mm image circle.<\/p>","protected":false},"featured_media":18333,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[947],"product_cat":[369],"product_tag":[],"class_list":["post-18339","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\/18339","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=18339"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/18333"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=18339"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=18339"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=18339"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=18339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}