Fwd: [jcmt_users] 26A JCMT Supplemental Rolling Call for Proposals
All - a good opportunity to go more ambitious on your existing program or try out some of the new instruments.
Best, TC
Begin forwarded message:
From: Harold Peña h.pena@eaobservatory.org Subject: [jcmt_users] 26A JCMT Supplemental Rolling Call for Proposals Date: February 4, 2026 at 9:51:35 AM GMT+8 To: JCMT_users jcmt_users@eaobservatory.org
Dear JCMT users,
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 hours is available for this call, distributed across all weather bands.
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.
Please submit your proposals via the JCMT proposal handling system, Hedwig. For full details and submission instructions, please visit:
https://proposals.eaobservatory.org/jcmt/semester/28/rolling/1
The instruments available for the 26A semester are listed below, with their availability dates:
ʻŪʻū (230 GHz) https://www.eaobservatory.org/jcmt/instrumentation/heterodyne/namakanui/uu-230ghz/: Will be available throughout the semester (February 1st – July 31st). HARP (345 GHz) https://www.eaobservatory.org/jcmt/instrumentation/heterodyne/harp/: Will be available throughout the semester (February 1st – July 31st). ʻĀweoweo (345 GHz) https://www.eaobservatory.org/jcmt/instrumentation/heterodyne/namakanui/aweoweo-345ghz/: Is planned to be available from June until the end of the semester (July 31st). Kuntur (690 GHz) https://www.eaobservatory.org/jcmt/instrumentation/heterodyne/namakanui/kuntur/: Is planned to be available until mid-May. ʻAlaʻihi (86 GHz) https://www.eaobservatory.org/jcmt/instrumentation/heterodyne/namakanui/alaihi/: Will be available for use throughout the 26A semester.
ʻAlaʻihi, Kuntur, and ʻĀweoweo are offered in a shared-risk mode.
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 ʻĀweoweo cartridge in the Nāmakanui receiver. ʻĀweoweo is planned to be re-installed in this position in mid-May 2026, in place of Kuntur.
ʻAlaʻihi 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’s performance for different IF values (e.g., 7 GHz) is under ongoing characterization.
The respective instrument webpages will be updated with definitive commissioning results for ʻAlaʻihi https://www.eaobservatory.org/jcmt/instrumentation/heterodyne/namakanui/alaihi/, Kuntur https://www.eaobservatory.org/jcmt/instrumentation/heterodyne/namakanui/kuntur/, and ʻĀweoweo https://www.eaobservatory.org/jcmt/instrumentation/heterodyne/namakanui/aweoweo-345ghz/ as they become available. For further information, please visit the JCMT instruments webpage:
https://www.eaobservatory.org/jcmt/instrumentation/heterodyne/
For information about PI eligibility and the Expanding Partner Program, please see:
https://www.eaobservatory.org/jcmt/proposals/eao_eligibility/
If this is your first time using Hedwig, you should use the ‘Log In’ button to generate an account. There is a Hedwig ‘Help’ facility at the upper right corner of each page, and individual Help tags in many other places.
Please contact us at helpdesk@eaobservatory.org mailto:helpdesk@eaobservatory.org if you have any questions.
Best regards, Harold Peña JCMT Support Scientist East Asian Observatory Hilo, Hawaiʻi, USA
– You received this message because you are subscribed to the Google Groups “JCMT_users” group. To unsubscribe from this group and stop receiving emails from it, send an email to jcmt_users+unsubscribe@eaobservatory.org mailto:jcmt_users+unsubscribe@eaobservatory.org. To view this discussion visit https://groups.google.com/a/eaobservatory.org/d/msgid/jcmt_users/CAAtLmECLjNvkatnYjm%2B8E5H8dT7JVTDmKFPp8%2BSyb5WBzkkLkQ%40mail.gmail.com https://groups.google.com/a/eaobservatory.org/d/msgid/jcmt_users/CAAtLmECLjNvkatnYjm%2B8E5H8dT7JVTDmKFPp8%2BSyb5WBzkkLkQ%40mail.gmail.com?utm_medium=email&utm_source=footer.