{"id":235,"date":"2016-11-13T12:42:32","date_gmt":"2016-11-13T11:42:32","guid":{"rendered":"https:\/\/escience.aip.de\/robo\/?page_id=235"},"modified":"2022-11-29T07:28:01","modified_gmt":"2022-11-29T06:28:01","slug":"solar-disk-integration-sdi-telescope","status":"publish","type":"page","link":"https:\/\/pepsi.aip.de\/?page_id=235","title":{"rendered":"Solar Disk Integration (SDI) telescope"},"content":{"rendered":"\n<p><strong>Retired in summer 2022.<\/strong><\/p>\n\n\n\n<p>Disk-unresolved solar light is fed to the spectrograph from a small Sun-as-a-star telescope via a fibre connection to the calibration unit. An integration sphere behind the telescope feeds two fibres to the spectrograph (note that the telescope was redesigned compared to the original description in the PEPSI technical paper in AN). SDI&#8217;s aim is, firstly, to provide an external comparison source for the instrumental profile and monitor its long-term stability and, secondly, to monitor the Sun over an entire magnetic activity cycle, among others.<\/p>\n\n\n\n<p>Data rate 402GB\/day , 32TB SAN storage for 60 d.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The poster presents the optical spectrum of the Sun obtained with SDI can be downloaded from the <a href=\"https:\/\/pepsi.aip.de\/?p=494\">news<\/a> section.<\/li>\n\n\n\n<li>Partial Solar eclipse in 2017 was observed by SDI. <a href=\"https:\/\/pepsi.aip.de\/?p=568\">Read more&#8230;<\/a><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"238\" src=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2016\/11\/SDI_telescope-1024x768.jpg\" alt=\"SDI telescope.\" class=\"wp-image-238\" srcset=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2016\/11\/SDI_telescope-1024x768.jpg 1024w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2016\/11\/SDI_telescope-300x225.jpg 300w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2016\/11\/SDI_telescope-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">SDI telescope.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"720\" data-id=\"439\" src=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_in_ice.png\" alt=\"\" class=\"wp-image-439\" srcset=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_in_ice.png 960w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_in_ice-300x225.png 300w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_in_ice-768x576.png 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><figcaption class=\"wp-element-caption\">Telescope embedded in ice.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"720\" data-id=\"440\" src=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_opt_des.png\" alt=\"\" class=\"wp-image-440\" srcset=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_opt_des.png 960w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_opt_des-300x225.png 300w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_opt_des-768x576.png 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><figcaption class=\"wp-element-caption\">Optical design.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"720\" data-id=\"438\" src=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_cahk.png\" alt=\"\" class=\"wp-image-438\" srcset=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_cahk.png 960w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_cahk-300x225.png 300w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_cahk-768x576.png 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><figcaption class=\"wp-element-caption\">Example solar spectrum.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"720\" data-id=\"469\" src=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_transit_v2.png\" alt=\"\" class=\"wp-image-469\" srcset=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_transit_v2.png 960w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_transit_v2-300x225.png 300w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/SDI_transit_v2-768x576.png 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><figcaption class=\"wp-element-caption\">Partial solar eclipse from October 2014 as seen by SDI&#8217;s guider telescope.<\/figcaption><\/figure>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">SDI&#8217;s view of the Mercury transit from May 2016<\/h3>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/01\/sdi_mercury_transit_converted.mp4\"><\/video><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Chamber RV stability reached: Solar p-mode oscillations detected<a href=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/05\/SDI_sol_p_osc.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-527 size-full\" src=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/05\/SDI_sol_p_osc.png\" alt=\"\" width=\"1149\" height=\"619\" srcset=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/05\/SDI_sol_p_osc.png 1149w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/05\/SDI_sol_p_osc-300x162.png 300w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/05\/SDI_sol_p_osc-768x414.png 768w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2017\/05\/SDI_sol_p_osc-1024x552.png 1024w\" sizes=\"auto, (max-width: 1149px) 100vw, 1149px\" \/><\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"<p>Retired in summer 2022. Disk-unresolved solar light is fed to the spectrograph from a small Sun-as-a-star telescope via a fibre connection to the calibration unit. An integration sphere behind the telescope feeds two fibres to the spectrograph (note that the telescope was redesigned compared to the original description in the PEPSI technical paper in AN). &hellip; <a href=\"https:\/\/pepsi.aip.de\/?page_id=235\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Solar Disk Integration (SDI) telescope<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-235","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/pages\/235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=235"}],"version-history":[{"count":23,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/pages\/235\/revisions"}],"predecessor-version":[{"id":2025,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/pages\/235\/revisions\/2025"}],"wp:attachment":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}