{"id":13497,"date":"2026-02-24T14:30:36","date_gmt":"2026-02-25T00:30:36","guid":{"rendered":"https:\/\/www.eaobservatory.org\/jcmt\/?p=13497"},"modified":"2026-02-24T14:30:36","modified_gmt":"2026-02-25T00:30:36","slug":"2026a-jcmt-supplemental-rolling-call-for-proposals","status":"publish","type":"post","link":"https:\/\/www.eaobservatory.org\/jcmt\/2026\/02\/2026a-jcmt-supplemental-rolling-call-for-proposals\/","title":{"rendered":"2026A JCMT Supplemental Rolling Call for Proposals"},"content":{"rendered":"<p dir=\"ltr\">The East Asian Observatory (EAO) announces a supplemental rolling call for proposals for Semester 26A at the James Clerk Maxwell Telescope (JCMT).<\/p>\n<p dir=\"ltr\">This call invites proposals for targets with right ascension (R.A.) between 06 h and 15 h; observations outside this range will not be scheduled. A total of 500 hours is available for this call, distributed across all weather bands.<\/p>\n<p dir=\"ltr\">Proposals will be processed on a rolling basis until the Semester 26A queue is full. Submissions must include a technical justification and a science justification, the latter of which is limited to one page (shorter than the requirement for regular JCMT calls). Submitted proposals will undergo immediate internal review by JCMT scientific staff, with evaluations based on technical feasibility and scientific merit.<\/p>\n<p dir=\"ltr\">Please submit your proposals via the JCMT proposal handling system, Hedwig. For full details and submission instructions, please visit:<\/p>\n<p dir=\"ltr\"><a href=\"https:\/\/proposals.eaobservatory.org\/jcmt\/semester\/28\/rolling\/1\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/proposals.eaobservatory.org\/jcmt\/semester\/28\/rolling\/1&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw0oYCaTAK-H7_rYMx88TT0i\">https:\/\/proposals.<wbr \/>eaobservatory.org\/jcmt\/<wbr \/>semester\/28\/rolling\/1<\/a><\/p>\n<p dir=\"ltr\">The instruments available for the 26A semester are listed below, with their availability dates:<\/p>\n<ul>\n<li dir=\"ltr\" aria-level=\"1\">\n<p dir=\"ltr\" role=\"presentation\">\u02bb<a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/uu-230ghz\/\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/uu-230ghz\/&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw2TBlxDVkAYHbj8f6qx9y66\">\u016a\u02bb\u016b (230 GHz)<\/a>: Will be available throughout the semester (February 1st \u2013 July 31st).<\/p>\n<\/li>\n<li dir=\"ltr\" aria-level=\"1\">\n<p dir=\"ltr\" role=\"presentation\"><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/harp\/\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/harp\/&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw3ue-umQuSBfPqZ55VCQPWL\">HARP (345 GHz)<\/a>: Will be available throughout the semester (February 1st \u2013 July 31st).<\/p>\n<\/li>\n<li dir=\"ltr\" aria-level=\"1\">\n<p dir=\"ltr\" role=\"presentation\"><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/aweoweo-345ghz\/\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/aweoweo-345ghz\/&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw2d5yXE8Zin31WEjIMnYYYX\">\u02bb\u0100weoweo (345 GHz)<\/a>: Is planned to be available from June until the end of the semester (July 31st).<\/p>\n<\/li>\n<li dir=\"ltr\" aria-level=\"1\">\n<p dir=\"ltr\" role=\"presentation\"><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/kuntur\/\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/kuntur\/&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw08Jh9MA3jWjbplCAMPRRSb\">Kuntur (690 GHz)<\/a>: Is planned to be available until mid-May.<\/p>\n<\/li>\n<li dir=\"ltr\" aria-level=\"1\">\n<p dir=\"ltr\" role=\"presentation\"><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/alaihi\/\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/alaihi\/&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw1IW7o2pvBKVL4cUvQJS33z\">\u02bbAla\u02bbihi (86 GHz)<\/a>: Will be available for use throughout the 26A semester.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">\u02bbAla\u02bbihi, Kuntur, and \u02bb\u0100weoweo are offered in a shared-risk mode.<\/p>\n<p dir=\"ltr\">Kuntur is a 690 GHz receiver offered to the JCMT community in collaboration with the Large Latin American Millimeter Array (LLAMA). Kuntur is a sideband-separating (2SB), dual-polarization receiver, with an observable sky frequency range of approximately 609 to 715 GHz (default IF 5.5 GHz). When installed, the instrument replaces the \u02bb\u0100weoweo cartridge in the N\u0101makanui receiver. \u02bb\u0100weoweo is planned to be re-installed in this position in mid-May 2026, in place of Kuntur.<\/p>\n<p dir=\"ltr\">\u02bbAla\u02bbihi is a dual-polarization, single-sideband (SSB) receiver, operating in upper sideband (USB) only, with an LO frequency range of 80.0 to 88.5 GHz. This corresponds to a sky frequency of approximately 86.0 to 94.5 GHz, given an IF of 6 GHz. The instrument\u2019s performance for different IF values (e.g., 7 GHz) is under ongoing characterization.<\/p>\n<p dir=\"ltr\">The respective instrument webpages will be updated with definitive commissioning results for <a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/alaihi\/\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/alaihi\/&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw1IW7o2pvBKVL4cUvQJS33z\">\u02bbAla\u02bbihi<\/a>, <a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/kuntur\/\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/kuntur\/&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw08Jh9MA3jWjbplCAMPRRSb\">Kuntur<\/a>, and <a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/aweoweo-345ghz\/\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/aweoweo-345ghz\/&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw2d5yXE8Zin31WEjIMnYYYX\">\u02bb\u0100weoweo<\/a> as they become available. For further information, please visit the JCMT instruments webpage:<\/p>\n<p dir=\"ltr\"><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw3pZz2Q8XPypFD29ZBhG-c0\">https:\/\/www.eaobservatory.org\/<wbr \/>jcmt\/instrumentation\/<wbr \/>heterodyne\/<\/a><\/p>\n<p dir=\"ltr\">For information about PI eligibility and the Expanding Partner Program, please see:<\/p>\n<p dir=\"ltr\"><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/proposals\/eao_eligibility\/\" target=\"_blank\" rel=\"nofollow noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=en&amp;q=https:\/\/www.eaobservatory.org\/jcmt\/proposals\/eao_eligibility\/&amp;source=gmail&amp;ust=1772065502024000&amp;usg=AOvVaw2BuoPNpnNrzs91T8gzYnQO\">https:\/\/www.eaobservatory.org\/<wbr \/>jcmt\/proposals\/eao_<wbr \/>eligibility\/<\/a><\/p>\n<p dir=\"ltr\">If this is your first time using Hedwig, you should use the \u2018Log In\u2019 button to generate an account. There is a Hedwig \u2018Help\u2019 facility at the upper right corner of each page, and individual Help tags in many other places.<\/p>\n<p dir=\"ltr\">Please contact us at <a href=\"mailto:helpdesk@eaobservatory.org\" target=\"_blank\" rel=\"nofollow noopener\">helpdesk@eaobservatory.org<\/a> if you have any questions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The East Asian Observatory (EAO) announces a supplemental rolling call for proposals for Semester 26A at the James Clerk Maxwell Telescope (JCMT). This call invites proposals for targets with right ascension (R.A.) between 06 h and 15 h; observations outside this range will not be scheduled. A total of 500\u2026 <a class=\"continue-reading-link\" href=\"https:\/\/www.eaobservatory.org\/jcmt\/2026\/02\/2026a-jcmt-supplemental-rolling-call-for-proposals\/\">Continue reading<\/a><\/p>\n","protected":false},"author":92,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/posts\/13497"}],"collection":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/users\/92"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/comments?post=13497"}],"version-history":[{"count":2,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/posts\/13497\/revisions"}],"predecessor-version":[{"id":13499,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/posts\/13497\/revisions\/13499"}],"wp:attachment":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/media?parent=13497"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/categories?post=13497"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/tags?post=13497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}