{"id":1321,"date":"2019-09-09T08:26:00","date_gmt":"2019-09-09T06:26:00","guid":{"rendered":"https:\/\/www.primalucelab.com\/astronomy\/blog\/?p=1321"},"modified":"2021-09-21T22:46:43","modified_gmt":"2021-09-21T20:46:43","slug":"esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien","status":"publish","type":"ht_kb","link":"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/","title":{"rendered":"ESATTO as focuser for Ritchey-Chretien telescopes"},"content":{"rendered":"

ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length. Ritchey-Chretien telescopes were, just a few years ago, very expensive but now are affordable and allow any amateur astronomer to own and use a Ritchey-Chretien telescope. Unfortunately these telescopes comes standard with a focuser that has not the load capacity requested for the heavy cameras and accessories commonly used in deep-sky astrophotography: let’s see how you can use ESATTO as a new and better focuser for Ritchey-Chretien.<\/p>\n

<\/p>\n

 The right adapter to use ESATTO as focuser for Ritchey-Chretien<\/h2>\n

Ritchey-Chretien telescopes produced by GSO have 2 different threads in the rear part of the telescope and that you can find by removing the original focuser. A 90mm male thread on 6″ and 8″ models or a 117mm thread on larger 10″, 12″, 14″ and 16″ models. In order to use ESATTO as focuser for Ritchey-Chretien, we designed 2 adapters: the PL3600235 adapter allows you to use the ESATTO 2″ on GSO Ritchey-Chretiens 6″ and 8″. The PL3600236 adapter allows you to use the ESATTO 3″ on GSO Ritchey-Chretiens 10″, 12″, 14″ and 16″.<\/p>\n

\"ESATTO
ESATTO as focuser for Ritchey-Chretien telescopes: to the left the 90mm thread that you can find on GSO 6″ or 8″ Ritchey-Chretien telescopes. To the right, the 117mm thread that you can find on GSO 10″, 12″, 14″ or 16″ Ritchey-Chretien telescopes.<\/figcaption><\/figure>\n

ESATTO 2″ on GSO Ritchey-Chretien 6″ and 8″<\/h2>\n

Ritchey-Chretien telescopes usually have a long back focus and the GSO models make no exception allowing to attach camera also many astrophotography accessories like e.g. off-axis guiders, filter wheels etc. In order to easily reach the focus position, usually you will need to use one or more extensions (provided with the telescope). Then, in order to use ESATTO 2″, you connect the PL3600235 adapter and finally the ESATTO 2″.<\/p>\n

\"ESATTO
ESATTO as focuser for Ritchey-Chretien telescopes: ESATTO 2″ installed on the GSO RC 8″<\/figcaption><\/figure>\n

ESATTO 3″ on GSO Ritchey-Chretien 10″, 12″, 14″ and 16″ (also truss)<\/h2>\n

The larger diameter Ritchey-Chretien telescopes by GSO are available also with truss type tube and this guide is valid also for these configurations. In order to easily reach the focus position, usually you will need to use one or more extensions (provided with the telescope). Then, in order to use ESATTO 3″ to the Ritchey-Chretien telescope, you connect the PL3600236 adapter and finally the ESATTO 3″.<\/p>\n

\"ESATTO
ESATTO as focuser for Ritchey-Chretien telescopes: ESATTO 3″ installed on the GSO RC 10″<\/figcaption><\/figure>\n

Using Ritchey-Chretien correctors or reducers with ESATTO<\/h2>\n

GSO Ritchey-Chretien telescopes offer also correctors and reducers in order to allow you to better adapt your telescope based on your imaging needs. Usually these correctors comes in a 2″ diameter barrel that you can easily connect to the ESATTO by adding the 2″ visual back: you need the PL8410001 visual back if you want to connect the corrector to the ESATTO 2″ or the PL8410002 visual back if you want to connect the corrector to the ESATTO 3″. Please note that every corrector is designed with a precise back focus distance (the distance from the corrector to the camera sensor) so, after the corrector, you will need the proper photo adapter based on your camera model and the accessories you may want to use.<\/p>\n

\"ESATTO
ESATTO as focuser for Ritchey-Chretien telescopes: by adding the 2″ visual back to the ESATTO, you can use the correctors for GSO Ritchey-Chretien telescopes<\/figcaption><\/figure>\n

GSO Ritchey-Chretien telescopes are now ready to be used with the ESATTO: this way you will have a better focuser with a very high load capacity (perfect also for heavy cameras and accessories for astrophotography), with a built in motor and electronics for remote control by connecting it to USB port of your EAGLE or external Windows computer of with WiFi by using the ESATTO Virtual HandPad.<\/p>\n","protected":false},"excerpt":{"rendered":"

ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length. Ritchey-Chretien telescopes were, just a few years ago, very expensive but now are affordable and allow any amateur astronomer to own and use a Ritchey-Chretien telescope. Unfortunately these telescopes comes standard with a focuser…<\/p>\n","protected":false},"author":1,"featured_media":2441,"template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[42],"ht-kb-tag":[],"class_list":["post-1321","ht_kb","type-ht_kb","status-publish","format-standard","has-post-thumbnail","hentry","ht_kb_category-esatto-en"],"yoast_head":"\nESATTO as focuser for Ritchey-Chretien telescopes<\/title>\n<meta name=\"description\" content=\"ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ESATTO as focuser for Ritchey-Chretien telescopes\" \/>\n<meta property=\"og:description\" content=\"ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/\" \/>\n<meta property=\"og:site_name\" content=\"PrimaLuceLab\" \/>\n<meta property=\"article:modified_time\" content=\"2021-09-21T20:46:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"500\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.primalucelab.com\/blog\/#organization\",\"name\":\"PrimaluceLab\",\"url\":\"https:\/\/www.primalucelab.com\/blog\/\",\"sameAs\":[],\"logo\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.primalucelab.com\/blog\/#logo\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/www.primalucelab.it\/blog\/wp-content\/uploads\/2021\/03\/logo.png\",\"contentUrl\":\"https:\/\/www.primalucelab.it\/blog\/wp-content\/uploads\/2021\/03\/logo.png\",\"width\":300,\"height\":83,\"caption\":\"PrimaluceLab\"},\"image\":{\"@id\":\"https:\/\/www.primalucelab.com\/blog\/#logo\"}},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.primalucelab.com\/blog\/#website\",\"url\":\"https:\/\/www.primalucelab.com\/blog\/\",\"name\":\"PrimaLuceLab\",\"description\":\"Aim high\",\"publisher\":{\"@id\":\"https:\/\/www.primalucelab.com\/blog\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.primalucelab.com\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/#primaryimage\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg\",\"contentUrl\":\"https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg\",\"width\":500,\"height\":500},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/#webpage\",\"url\":\"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/\",\"name\":\"ESATTO as focuser for Ritchey-Chretien telescopes\",\"isPartOf\":{\"@id\":\"https:\/\/www.primalucelab.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/#primaryimage\"},\"datePublished\":\"2019-09-09T06:26:00+00:00\",\"dateModified\":\"2021-09-21T20:46:43+00:00\",\"description\":\"ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.primalucelab.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Articles\",\"item\":\"https:\/\/www.primalucelab.com\/blog\/support\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"ESATTO as focuser for Ritchey-Chretien telescopes\"}]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"ESATTO as focuser for Ritchey-Chretien telescopes","description":"ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/","og_locale":"en_US","og_type":"article","og_title":"ESATTO as focuser for Ritchey-Chretien telescopes","og_description":"ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length.","og_url":"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/","og_site_name":"PrimaLuceLab","article_modified_time":"2021-09-21T20:46:43+00:00","og_image":[{"width":500,"height":500,"url":"https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg","path":"\/home\/customer\/www\/primalucelab.com\/public_html\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg","size":"full","id":2441,"alt":"","pixels":250000,"type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Organization","@id":"https:\/\/www.primalucelab.com\/blog\/#organization","name":"PrimaluceLab","url":"https:\/\/www.primalucelab.com\/blog\/","sameAs":[],"logo":{"@type":"ImageObject","@id":"https:\/\/www.primalucelab.com\/blog\/#logo","inLanguage":"en-US","url":"https:\/\/www.primalucelab.it\/blog\/wp-content\/uploads\/2021\/03\/logo.png","contentUrl":"https:\/\/www.primalucelab.it\/blog\/wp-content\/uploads\/2021\/03\/logo.png","width":300,"height":83,"caption":"PrimaluceLab"},"image":{"@id":"https:\/\/www.primalucelab.com\/blog\/#logo"}},{"@type":"WebSite","@id":"https:\/\/www.primalucelab.com\/blog\/#website","url":"https:\/\/www.primalucelab.com\/blog\/","name":"PrimaLuceLab","description":"Aim high","publisher":{"@id":"https:\/\/www.primalucelab.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.primalucelab.com\/blog\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/#primaryimage","inLanguage":"en-US","url":"https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg","contentUrl":"https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg","width":500,"height":500},{"@type":"WebPage","@id":"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/#webpage","url":"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/","name":"ESATTO as focuser for Ritchey-Chretien telescopes","isPartOf":{"@id":"https:\/\/www.primalucelab.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/#primaryimage"},"datePublished":"2019-09-09T06:26:00+00:00","dateModified":"2021-09-21T20:46:43+00:00","description":"ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length.","breadcrumb":{"@id":"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.primalucelab.com\/blog\/support\/esatto-as-focuser-for-ritchey-chretien-focheggiatore-per-ritchey-chretien\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.primalucelab.com\/blog\/"},{"@type":"ListItem","position":2,"name":"Articles","item":"https:\/\/www.primalucelab.com\/blog\/support\/"},{"@type":"ListItem","position":3,"name":"ESATTO as focuser for Ritchey-Chretien telescopes"}]}]}},"uagb_featured_image_src":{"full":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg",500,500,false],"thumbnail":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza-150x150.jpg",150,150,true],"medium":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza-300x300.jpg",300,300,true],"medium_large":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg",500,500,false],"large":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg",500,500,false],"ht-kb-thumb":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza-50x50.jpg",50,50,true],"1536x1536":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg",500,500,false],"2048x2048":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg",500,500,false],"ultp_layout_landscape_large":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg",500,500,false],"ultp_layout_landscape":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg",500,500,false],"ultp_layout_portrait":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg",500,500,false],"ultp_layout_square":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg",500,500,false],"post-thumbnail":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza-60x60.jpg",60,60,true],"hkb-thumb":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza-100x100.jpg",100,100,true],"crp_thumbnail":["https:\/\/www.primalucelab.com\/blog\/wp-content\/uploads\/2019\/09\/ESATTO-as-focuser-for-Ritchey-Chretien-evidenza.jpg",150,150,false]},"uagb_author_info":{"display_name":"DS Admin","author_link":"https:\/\/www.primalucelab.com\/blog\/author\/ds_admin\/"},"uagb_comment_info":0,"uagb_excerpt":"ESATTO is the perfect focuser for Ritchey-Chretien telescopes, that are great instruments for deep-sky astrophotography at medium-long focal length. Ritchey-Chretien telescopes were, just a few years ago, very expensive but now are affordable and allow any amateur astronomer to own and use a Ritchey-Chretien telescope. Unfortunately these telescopes comes standard with a focuser...","_links":{"self":[{"href":"https:\/\/www.primalucelab.com\/blog\/wp-json\/wp\/v2\/ht-kb\/1321","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.primalucelab.com\/blog\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/www.primalucelab.com\/blog\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/www.primalucelab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":6,"href":"https:\/\/www.primalucelab.com\/blog\/wp-json\/wp\/v2\/ht-kb\/1321\/revisions"}],"predecessor-version":[{"id":3320,"href":"https:\/\/www.primalucelab.com\/blog\/wp-json\/wp\/v2\/ht-kb\/1321\/revisions\/3320"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.primalucelab.com\/blog\/wp-json\/wp\/v2\/media\/2441"}],"wp:attachment":[{"href":"https:\/\/www.primalucelab.com\/blog\/wp-json\/wp\/v2\/media?parent=1321"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/www.primalucelab.com\/blog\/wp-json\/wp\/v2\/ht-kb-category?post=1321"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/www.primalucelab.com\/blog\/wp-json\/wp\/v2\/ht-kb-tag?post=1321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}