{"product_id":"takahashi-extender-1-5x-for-epsilon-180ed-tka68595","title":"Takahashi Extender 1.5x for EPSILON-180ED (TKA68595)","description":"\u003ch2\u003eTakahashi Extender 1.5x for EPSILON-180ED\u003c\/h2\u003e\n\u003ch4 class=\"intro\"\u003eThe 1.5x extender for Takahashi Epsilon-180ED telescope\u003c\/h4\u003e\n\u003cp\u003eFor Epsilon-180ED users who want to shoot at longer focal lengths than the native 500mm, Takahashi offers a 1.5x extender. The focal length increases to 770mm and the aperture ratio to F\/4.3.This extender is specific to the hyperbolic Newtonian optical formula of the Takahashi Epsilon-180ED; it cannot be used on another telescope.\u003c\/p\u003e\n\u003cp\u003eIt includes 7 lenses, divided into 5 groups. The coma is fully corrected on an image circle of 44 mm in diameter which covers the full frame. As shown on the spot-diagram, the diffraction spot measures 2 microns in the center of the field and 5 microns on the periphery.\u003c\/p\u003e\n\u003cp\u003eThe Takahashi ε-Extender E-180ED can be used for both visual and photographic purposes; refer to the system-chart for assemblies. The input mechanical interface is M68 x 0.75 male thread. The output is M54 x 0.75 female. Mounting a camera is direct, with the addition of a Takahashi wide field T-ring specific to your camera brand. Although possible, the use of 2\" filters (with M48 thread) screwed into the extender is not recommended. They can cause unsightly reflections. Also, due to the construction of the extender, it is no longer possible to screw these filters into the wide field T-ring, as is usually allowed. Any filters must therefore be attached either directly to the camera (as a clip to be placed directly in front of the sensor), or in a filter wheel in the case of a camera.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch4\u003eOptical characteristics\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003eCHARACTERISTIC\u003c\/td\u003e\n\u003ctd\u003eTAKAHASHI 1.5X Ε-EXTENDER E-180ED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal length\u003c\/td\u003e\n\u003ctd\u003e770 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003eF\/4.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage circle diameter\u003c\/td\u003e\n\u003ctd\u003e44 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetal back distance\u003c\/td\u003e\n\u003ctd\u003e56.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope\u003c\/td\u003e\n\u003ctd\u003eTakahashi Epsilon-180ED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eMechanical characteristics\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003eCARACTÉRISTIQUE\u003c\/td\u003e\n\u003ctd\u003eTAKAHASHI 1.5X Ε-EXTENDER E-180ED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign\u003c\/td\u003e\n\u003ctd\u003e7 lenses (5 groups)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput interface\u003c\/td\u003e\n\u003ctd\u003eM68x0.75 male thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput interface\u003c\/td\u003e\n\u003ctd\u003eM54x075 female thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackfocus length\u003c\/td\u003e\n\u003ctd\u003e45.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical diameter\u003c\/td\u003e\n\u003ctd\u003e78.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal length\u003c\/td\u003e\n\u003ctd\u003e105.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e550 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMetal back distance\u003c\/h3\u003e\n\u003cfigure\u003e\u003cimg data-pagespeed-url-hash=\"478665405\" title=\"TKA68595-schema.png\" src=\"https:\/\/takahashi-europe.com\/assets\/uploads\/AUTRE\/TKA68595-schema.png\" onload=\"pagespeed.CriticalImages.checkImageForCriticality(this);\"\u003e\n\u003cfigcaption\u003eDiagram of threads and focal point position of the Takahashi 1.5x ε-Extender E-180ED\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSpot-diagrams\u003c\/h3\u003e\n\u003cfigure\u003e\u003cimg data-pagespeed-url-hash=\"2180220500\" title=\"Epsilon-180ED-EXT-180ED-spots.png\" src=\"https:\/\/takahashi-europe.com\/assets\/uploads\/SPOT-DIAGRAMS\/Epsilon-180ED-EXT-180ED-spots.png\" onload=\"pagespeed.CriticalImages.checkImageForCriticality(this);\"\u003e\n\u003cfigcaption\u003eSpot-diagram of the Takahashi Epsilon-180ED telescope associated with 1.5x ε-Extender E-180ED\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTakahashi Extender 1.5x for EPSILON-180ED\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eManual \u0026amp; Warranty \u003c\/h3\u003e\n\u003cdiv id=\"shopify-section-template--16185084641509__description\" class=\"shopify-section\"\u003e\n\u003csection data-section-id=\"template--16185084641509__description\" data-section-type=\"tabbed\" data-url=\"\/\/takahashiamerica.com\/cdn\/shop\/t\/3\/assets\/script.tabbed.js?v=83467205078527531921656105673\" data-carousel-type=\"section\" class=\"container clearfix loaded ignore\"\u003e\n\u003cdiv class=\"nine center text-left bottompad clearfix\"\u003e\n\u003cdiv id=\"description\" class=\"product-desc tab-body tab-body-content tab-body-id-template--16185084641509__description\" role=\"tabpanel\" aria-labelledby=\"tab-description\" tabindex=\"0\" data-mce-tabindex=\"0\"\u003e\n\u003cp class=\"tabindex\"\u003e\u003ca href=\"https:\/\/takahashiamerica.com\/pages\/warranty-service?_pos=1\u0026amp;_psq=warranty\u0026amp;_ss=e\u0026amp;_v=1.0\" data-mce-href=\"https:\/\/takahashiamerica.com\/pages\/warranty-service?_pos=1\u0026amp;_psq=warranty\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003eTakahashi 5-Years Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":44152424497381,"sku":"TAK-TKA68595","price":1414.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/takahashi-extender-1-5x-for-epsilon-180ed-tka68595-astronomy-plus-1.jpg?v=1690492190","url":"https:\/\/istronomyplus.com\/products\/takahashi-extender-1-5x-for-epsilon-180ed-tka68595","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}