{"id":1140,"date":"2026-06-19T13:28:37","date_gmt":"2026-06-19T11:28:37","guid":{"rendered":"https:\/\/www.bexus.org\/?p=1140"},"modified":"2026-06-19T13:30:01","modified_gmt":"2026-06-19T11:30:01","slug":"gretel-first-devlog","status":"publish","type":"post","link":"https:\/\/www.bexus.org\/index.php\/2026\/06\/19\/gretel-first-devlog\/","title":{"rendered":"GRETEL: Let&#8217;s start a Devlog"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">A new Instrument for the Kiel Fleet<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A new project is taking shape at Kiel University: The <strong>Galactic Ray high-Energy Telescope, GRETEL<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"986\" src=\"https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/IMG_20260324_141436_665-1200.jpg\" alt=\"\" class=\"wp-image-1142\" style=\"aspect-ratio:1.3333333333333333;object-fit:cover;width:293px;height:auto\" srcset=\"https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/IMG_20260324_141436_665-1200.jpg 1200w, https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/IMG_20260324_141436_665-1200-300x247.jpg 300w, https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/IMG_20260324_141436_665-1200-768x631.jpg 768w, https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/IMG_20260324_141436_665-1200-1024x841.jpg 1024w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><figcaption class=\"wp-element-caption\">3D-printed mockup of GRETEL<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">GRETEL takes a proven concept and scales it down to fit into a CubeSat. The concept is very similar to the High Energy Telescope aboard Solar Orbiter, (and actually uses spare parts): Two solid-state detectors positioned symmetrically around a scintillation crystal. When highly energetic particles penetrate the detectors, they deposit part of their energy there. These signals are picked up and measured by the electronics.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">A Northern German Collaboration<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2048\" height=\"1152\" src=\"https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/gretel_team_image.webp\" alt=\"\" class=\"wp-image-1143\" style=\"aspect-ratio:1.777810613416642;object-fit:contain;object-position:40% 34%;width:314px;height:auto\" srcset=\"https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/gretel_team_image.webp 2048w, https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/gretel_team_image-300x169.webp 300w, https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/gretel_team_image-768x432.webp 768w, https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/gretel_team_image-1024x576.webp 1024w, https:\/\/www.bexus.org\/wp-content\/uploads\/2026\/06\/gretel_team_image-1536x864.webp 1536w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><figcaption class=\"wp-element-caption\">Members of the Hamburg Space Team visiting Kiel<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">GRETEL is being developed in collaboration with the Hamburg Space Team, located at the Technical University of Hamburg. The newly founded team aims to launch the CubeSat mission <strong>Hamburg Autonomous Northern lights Survey (HANS)<\/strong> within the next years. GRETEL will fly as a scientfic payload on this mission.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Find out more about Hamburg Space Team on <a href=\"https:\/\/hamburgspace.de\/\" target=\"_blank\" rel=\"noopener\">https:\/\/hamburgspace.de<\/a> .<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Work In Progress<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GRETEL is being developed as part of my Master&#8217;s thesis. Currently, I am working on particle transport simulations to investigate the instrument&#8217;s response to different types and energies of radiation. At the same time, the workshop has finished machining the first components. Soon the shiny aluminum prototype will be ready for assembly!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The first Devlog on GRETEL.<\/p>\n","protected":false},"author":19,"featured_media":1150,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,7],"tags":[23,24,22,25,26],"class_list":["post-1140","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gretel","category-pr","tag-galactic-rays","tag-gcr","tag-gretel","tag-kiel","tag-particle-detector"],"_links":{"self":[{"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/posts\/1140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/users\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/comments?post=1140"}],"version-history":[{"count":3,"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/posts\/1140\/revisions"}],"predecessor-version":[{"id":1151,"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/posts\/1140\/revisions\/1151"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/media\/1150"}],"wp:attachment":[{"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/media?parent=1140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/categories?post=1140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bexus.org\/index.php\/wp-json\/wp\/v2\/tags?post=1140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}