{"id":13597,"date":"2026-11-06T14:08:30","date_gmt":"2026-11-07T00:08:30","guid":{"rendered":"https:\/\/www.eaobservatory.org\/jcmt\/?p=13597"},"modified":"2026-11-06T14:08:31","modified_gmt":"2026-11-07T00:08:31","slug":"2027a-jcmt-regular-call-for-proposals","status":"publish","type":"post","link":"https:\/\/www.eaobservatory.org\/jcmt\/2026\/11\/2027a-jcmt-regular-call-for-proposals\/","title":{"rendered":"2027A JCMT Regular Call for Proposals"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">The East Asian Observatory (EAO) is pleased to announce the <\/span><b>regular call for proposals for Semester 27A<\/b><span style=\"font-weight: 400;\">\u00a0at the James Clerk Maxwell Telescope (JCMT). Please submit your proposals via the JCMT proposal handling system, Hedwig. For full details and submission instructions, please visit:<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/proposals.eaobservatory.org\/jcmt\/semester\/31\/regular\"><span style=\"font-weight: 400;\">https:\/\/proposals.eaobservatory.org\/jcmt\/semester\/31\/regular<\/span><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">The deadline for 27A Principal Investigator (PI) Proposals is <\/span><b>December 5, 2026, at 01:00 UTC<\/b><span style=\"font-weight: 400;\">. The Hedwig system permits the submission (and editing) of proposals until this deadline.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The instruments available for the 27A semester are listed below, along with their respective availability:<\/span><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/alaihi\/\"><span style=\"font-weight: 400;\">\u02bbAla\u02bbihi (86 GHz)<\/span><\/a><span style=\"font-weight: 400;\">, \u02bb<\/span><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/uu-230ghz\/\"><span style=\"font-weight: 400;\">\u016a\u02bb\u016b (230 GHz)<\/span><\/a><span style=\"font-weight: 400;\"> and <\/span><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/harp\/\"><span style=\"font-weight: 400;\">HARP (345 GHz)<\/span><\/a><span style=\"font-weight: 400;\"> will be available throughout the semester.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/aweoweo-345ghz\/\"><span style=\"font-weight: 400;\">\u02bb\u0100weoweo (345 GHz)<\/span><\/a><span style=\"font-weight: 400;\"> is planned to be available for approximately half the semester<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/kuntur\/\"><span style=\"font-weight: 400;\">Kuntur (690 GHz)<\/span><\/a><span style=\"font-weight: 400;\"> is planned to be available for approximately half the semester<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">When installed, Kuntur replaces \u02bb\u0100weoweo in the N\u0101makanui receiver. <\/span>Please note that the exact dates for switching between <span style=\"font-weight: 400;\">\u02bb\u0100<\/span>weoweo and Kuntur has not been decided, and will be determined based on operational needs and science demand. <span style=\"font-weight: 400;\">\u02bbAla\u02bbihi, is offered in shared-risk mode.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">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).\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\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.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">The respective instrument webpages will be updated with definitive commissioning results for <\/span><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/alaihi\/\"><span style=\"font-weight: 400;\">\u02bbAla\u02bbihi<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/kuntur\/\"><span style=\"font-weight: 400;\">Kuntur<\/span><\/a><span style=\"font-weight: 400;\">, and <\/span><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/namakanui\/aweoweo-345ghz\/\"><span style=\"font-weight: 400;\">\u02bb\u0100weoweo<\/span><\/a><span style=\"font-weight: 400;\"> as they become available. For further information, please visit the JCMT instruments webpage:<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/\"><span style=\"font-weight: 400;\">https:\/\/www.eaobservatory.org\/jcmt\/instrumentation\/heterodyne\/<\/span><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">PIs must meet the regional or institutional affiliation requirements for Taiwan, Thailand, the United Kingdom or the 27A semester Expanding Partner Program regions (Malaysia, Vietnam, Indonesia, and India, and Brazil and Argentina). Co-I status is not similarly restricted. For details regarding PI eligibility, please see:<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.eaobservatory.org\/jcmt\/proposals\/eao_eligibility\/\"><span style=\"font-weight: 400;\">https:\/\/www.eaobservatory.org\/jcmt\/proposals\/eao_eligibility\/<\/span><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">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.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Please contact us at <\/span><span style=\"font-weight: 400;\">helpdesk@eaobservatory.org<\/span><span style=\"font-weight: 400;\"> if you have any questions.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The East Asian Observatory (EAO) is pleased to announce the regular call for proposals for Semester 27A\u00a0at the James Clerk Maxwell Telescope (JCMT). Please submit your proposals via the JCMT proposal handling system, Hedwig. For full details and submission instructions, please visit: &nbsp; https:\/\/proposals.eaobservatory.org\/jcmt\/semester\/31\/regular &nbsp; The deadline for 27A Principal\u2026 <a class=\"continue-reading-link\" href=\"https:\/\/www.eaobservatory.org\/jcmt\/2026\/11\/2027a-jcmt-regular-call-for-proposals\/\">Continue reading<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13597","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/posts\/13597","targetHints":{"allow":["GET"]}}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/comments?post=13597"}],"version-history":[{"count":3,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/posts\/13597\/revisions"}],"predecessor-version":[{"id":13603,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/posts\/13597\/revisions\/13603"}],"wp:attachment":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/media?parent=13597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/categories?post=13597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/tags?post=13597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}