{"id":10817,"date":"2022-06-23T21:23:49","date_gmt":"2022-06-23T19:23:49","guid":{"rendered":"https:\/\/nolle.engineering\/?p=10817"},"modified":"2026-10-29T08:48:24","modified_gmt":"2026-10-29T07:48:24","slug":"sun-spot-spotting","status":"publish","type":"post","link":"https:\/\/nolle.engineering\/en\/2022\/06\/23\/sun-spot-spotting\/","title":{"rendered":"Sun spot spotting"},"content":{"rendered":"

Sun spot activity currently ramping up. Time to take out the telescope and go for some early evening sun spotting from the balcony.<\/p>\n\n\n\n

A note of WARNING and DISCLAIMER: only use certified sun filter foil, I am using Seymour Solar Filter, grade ND5, available here<\/a>.<\/strong> Be responsible and operate on your own risk.<\/strong><\/p>\n\n\n\n

\"Child<\/figure>\n\n\n\n

Telescope equipped with 3D printed sun filter, maximum telescope diameter 183mm<\/strong>.<\/p>\n\n\n\n

\"CAD
Filter assembly, 2 support rings, 2 screw on covers to protect the delicate filter foil (!!safety item!!)<\/figcaption><\/figure>\n\n\n\n
\"CAD<\/figure>\n\n\n\n
\"CAD<\/figure>\n\n\n\n

That’s the sunspot image as of 2022\/06\/23, not ours (lacking a camera adapter), curtesy NASA:<\/p>\n\n\n\n

\"NASA<\/figure>","protected":false},"excerpt":{"rendered":"

Sun spot activity currently ramping up. Time to take out the telescope and go for some early evening sun spotting from the balcony. A note of WARNING and DISCLAIMER: only use certified sun filter foil, I am using Seymour Solar Filter, grade ND5, available here. Be responsible and operate on your own risk. Telescope equipped… <\/p>\n

Read More<\/a><\/div>","protected":false},"author":5213,"featured_media":10818,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[137],"class_list":["post-10817","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-3d-printing","fallback-thumbnail"],"yoast_head":"\n3D-Printed Solar Filter for Sunspot Observation - nolle.engineering<\/title>\n<meta name=\"description\" content=\"Sunspot observation from the balcony with a 3D-printed solar filter holder for telescopes up to 183 mm, using Seymour ND5 solar filter foil. Safety note.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nolle.engineering\/en\/2022\/06\/23\/sun-spot-spotting\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"3D-Printed Solar Filter for Sunspot Observation - nolle.engineering\" \/>\n<meta property=\"og:description\" content=\"Sunspot observation from the balcony with a 3D-printed solar filter holder for telescopes up to 183 mm, using Seymour ND5 solar filter foil. Safety note.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nolle.engineering\/en\/2022\/06\/23\/sun-spot-spotting\/\" \/>\n<meta property=\"og:site_name\" content=\"nolle.engineering\" \/>\n<meta property=\"article:published_time\" content=\"2022-06-23T19:23:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-29T07:48:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/nolle.engineering\/wp-content\/uploads\/2022\/06\/IMG_8820-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1920\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Nolle Engineering\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nolle Engineering\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/\"},\"author\":{\"name\":\"Nolle Engineering\",\"@id\":\"https:\/\/nolle.engineering\/#\/schema\/person\/c2bb9b68fea17035c7def98cad25544d\"},\"headline\":\"Sun spot spotting\",\"datePublished\":\"2022-06-23T19:23:49+00:00\",\"dateModified\":\"2026-10-29T07:48:24+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/\"},\"wordCount\":97,\"publisher\":{\"@id\":\"https:\/\/nolle.engineering\/#organization\"},\"keywords\":[\"3D printing\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/\",\"url\":\"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/\",\"name\":\"3D-Printed Solar Filter for Sunspot Observation - nolle.engineering\",\"isPartOf\":{\"@id\":\"https:\/\/nolle.engineering\/#website\"},\"datePublished\":\"2022-06-23T19:23:49+00:00\",\"dateModified\":\"2026-10-29T07:48:24+00:00\",\"description\":\"Sunspot observation from the balcony with a 3D-printed solar filter holder for telescopes up to 183 mm, using Seymour ND5 solar filter foil. Safety note.\",\"breadcrumb\":{\"@id\":\"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Startseite\",\"item\":\"https:\/\/nolle.engineering\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Sun spot spotting\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/nolle.engineering\/#website\",\"url\":\"https:\/\/nolle.engineering\/\",\"name\":\"nolle.engineering\",\"description\":\"explore \/ design \/ make\",\"publisher\":{\"@id\":\"https:\/\/nolle.engineering\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/nolle.engineering\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/nolle.engineering\/#organization\",\"name\":\"nolle.engineering\",\"url\":\"https:\/\/nolle.engineering\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/nolle.engineering\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/nolle.engineering\/wp-content\/uploads\/2026\/04\/ne-logo-white.png\",\"contentUrl\":\"https:\/\/nolle.engineering\/wp-content\/uploads\/2026\/04\/ne-logo-white.png\",\"width\":2311,\"height\":1480,\"caption\":\"nolle.engineering\"},\"image\":{\"@id\":\"https:\/\/nolle.engineering\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/nolle.engineering\/#\/schema\/person\/c2bb9b68fea17035c7def98cad25544d\",\"name\":\"Nolle Engineering\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/nolle.engineering\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/276e2b8d3ab4c9fb4cf08b3580a20e31e5a0374ebaa147db9432168cba3b98bd?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/276e2b8d3ab4c9fb4cf08b3580a20e31e5a0374ebaa147db9432168cba3b98bd?s=96&d=mm&r=g\",\"caption\":\"Nolle Engineering\"},\"sameAs\":[\"https:\/\/nolle.engineering\"],\"url\":\"https:\/\/nolle.engineering\/en\/author\/nolle-engineering\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"3D-Printed Solar Filter for Sunspot Observation - nolle.engineering","description":"Sunspot observation from the balcony with a 3D-printed solar filter holder for telescopes up to 183 mm, using Seymour ND5 solar filter foil. Safety note.","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:\/\/nolle.engineering\/en\/2022\/06\/23\/sun-spot-spotting\/","og_locale":"en_US","og_type":"article","og_title":"3D-Printed Solar Filter for Sunspot Observation - nolle.engineering","og_description":"Sunspot observation from the balcony with a 3D-printed solar filter holder for telescopes up to 183 mm, using Seymour ND5 solar filter foil. Safety note.","og_url":"https:\/\/nolle.engineering\/en\/2022\/06\/23\/sun-spot-spotting\/","og_site_name":"nolle.engineering","article_published_time":"2022-06-23T19:23:49+00:00","article_modified_time":"2026-10-29T07:48:24+00:00","og_image":[{"width":2560,"height":1920,"url":"https:\/\/nolle.engineering\/wp-content\/uploads\/2022\/06\/IMG_8820-scaled.jpg","type":"image\/jpeg"}],"author":"Nolle Engineering","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Nolle Engineering"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/#article","isPartOf":{"@id":"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/"},"author":{"name":"Nolle Engineering","@id":"https:\/\/nolle.engineering\/#\/schema\/person\/c2bb9b68fea17035c7def98cad25544d"},"headline":"Sun spot spotting","datePublished":"2022-06-23T19:23:49+00:00","dateModified":"2026-10-29T07:48:24+00:00","mainEntityOfPage":{"@id":"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/"},"wordCount":97,"publisher":{"@id":"https:\/\/nolle.engineering\/#organization"},"keywords":["3D printing"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/","url":"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/","name":"3D-Printed Solar Filter for Sunspot Observation - nolle.engineering","isPartOf":{"@id":"https:\/\/nolle.engineering\/#website"},"datePublished":"2022-06-23T19:23:49+00:00","dateModified":"2026-10-29T07:48:24+00:00","description":"Sunspot observation from the balcony with a 3D-printed solar filter holder for telescopes up to 183 mm, using Seymour ND5 solar filter foil. Safety note.","breadcrumb":{"@id":"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/nolle.engineering\/2022\/06\/23\/sun-spot-spotting\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Startseite","item":"https:\/\/nolle.engineering\/"},{"@type":"ListItem","position":2,"name":"Sun spot spotting"}]},{"@type":"WebSite","@id":"https:\/\/nolle.engineering\/#website","url":"https:\/\/nolle.engineering\/","name":"nolle.engineering","description":"explore \/ design \/ make","publisher":{"@id":"https:\/\/nolle.engineering\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/nolle.engineering\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/nolle.engineering\/#organization","name":"nolle.engineering","url":"https:\/\/nolle.engineering\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/nolle.engineering\/#\/schema\/logo\/image\/","url":"https:\/\/nolle.engineering\/wp-content\/uploads\/2026\/04\/ne-logo-white.png","contentUrl":"https:\/\/nolle.engineering\/wp-content\/uploads\/2026\/04\/ne-logo-white.png","width":2311,"height":1480,"caption":"nolle.engineering"},"image":{"@id":"https:\/\/nolle.engineering\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/nolle.engineering\/#\/schema\/person\/c2bb9b68fea17035c7def98cad25544d","name":"Nolle Engineering","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/nolle.engineering\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/276e2b8d3ab4c9fb4cf08b3580a20e31e5a0374ebaa147db9432168cba3b98bd?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/276e2b8d3ab4c9fb4cf08b3580a20e31e5a0374ebaa147db9432168cba3b98bd?s=96&d=mm&r=g","caption":"Nolle Engineering"},"sameAs":["https:\/\/nolle.engineering"],"url":"https:\/\/nolle.engineering\/en\/author\/nolle-engineering\/"}]}},"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/nolle.engineering\/wp-content\/uploads\/2022\/06\/IMG_8820-scaled.jpg","_links":{"self":[{"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/posts\/10817","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/users\/5213"}],"replies":[{"embeddable":true,"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/comments?post=10817"}],"version-history":[{"count":4,"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/posts\/10817\/revisions"}],"predecessor-version":[{"id":16405,"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/posts\/10817\/revisions\/16405"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/media\/10818"}],"wp:attachment":[{"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/media?parent=10817"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/categories?post=10817"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nolle.engineering\/en\/wp-json\/wp\/v2\/tags?post=10817"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}