![\"Plot](\"http:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2014\/11\/AtTrans_Heterodyne1-1024x549.jpeg\")
<\/a>Plot of transmission as a function of frequency for different levels of precipitable water vapor. The two current heterodyne receivers HARP and RxA are shown in relation to this.<\/p><\/div>\n
Continuum Instrumentation<\/h2>\n
SCUBA-2<\/a><\/strong> is the JCMT’s continuum camera. It has four 32×40 detector arrays at 850 and 450 micron, in total 10240 detectors. SCUBA-2 operations are currently paused.<\/p>\n Plot of transmission as a function of frequency for different levels of precipitable water vapor. The SCUBA-2 450 and 850 micron filters are shown in relation to this. It is clearly evident that 450 micron data requires good weather conditions due to the atmospheric window.<\/p><\/div>\n Last update: January 15th 2026.<\/p>\n The \u02bb\u0100weoweo<\/a> cartridge is being temporarily removed from the N\u0101makanui cartridge as of November 7th 2025, and replaced with the 625 GHz cartridge Kuntur<\/a>. The exact date to swap back has not been selected but is anticipated to be in Spring 2026.<\/p>\n As announced to the JCMT community in 2025, operations with SCUBA-2 (and its polarimeter POL-2) are currently paused.<\/p>\n <\/td>\n Heterodyne Instrumentation The JCMT currently has five heterodyne spectral instruments: HARP:\u00a0a 16-pixel array receiver working at 345 GHz; \u02bb\u016a\u02bb\u016b: a single-pixel insert on N\u0101makanui working at 230 GHz; \u02bb\u0100weoweo: a single-pixel insert on N\u0101makanui working at 345 GHz; \u02bbAla\u02bbihi, a single pixel insert on N\u0101makanui working at 86 GHz and\u2026 Continue reading<\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/134"}],"collection":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/comments?post=134"}],"version-history":[{"count":88,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/134\/revisions"}],"predecessor-version":[{"id":13484,"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/pages\/134\/revisions\/13484"}],"wp:attachment":[{"href":"https:\/\/www.eaobservatory.org\/jcmt\/wp-json\/wp\/v2\/media?parent=134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"Plot](\"http:\/\/www.eaobservatory.org\/jcmt\/wp-content\/uploads\/sites\/2\/2014\/11\/AtTrans_Continuum-1024x542.jpeg\")
<\/a><\/a>Current Status<\/h2>\n
Operational<\/h3>\n
\n
Currently not installed<\/h3>\n
\n
Operations Paused<\/h3>\n
\n
\n\n
\n Instrument<\/th>\n Comments<\/th>\n<\/tr>\n \n SCUBA-2<\/a><\/td>\n \n \n
\n HARP<\/a><\/td>\n \n \n
\n \u02bb\u016a\u02bb\u016b<\/a><\/td>\n \n \n
\n \u02bb\u0100weoweo\u00a0<\/a><\/td>\n \n \n
\n \u02bbAla\u02bbihi<\/td>\n \n \n
\n Kuntur<\/a><\/td>\n \n \n
\n ACSIS<\/a><\/td>\n \n \n
\n WVM<\/td>\n \n \n
Not Operational\/Retired:<\/h3>\n
\n\n
\n Instrument<\/th>\n Comments<\/th>\n<\/tr>\n \n RxA<\/p>\n \n \n
\n RxW<\/td>\n \n \n
<\/h2>\n","protected":false},"excerpt":{"rendered":"