We are honored to announce the 1st Call for Proposals (CfP) of the 40-m Thai National Radio Telescope (TNRT) at Thai National Radio Astronomy Observatory (TNRO) in Chiang Mai, the northern part of Thailand, as Cycle 0. This observatory with the 40-m TNRT is a national facility in Thailand, which is operated by National Astronomical Research Institute of Thailand (NARIT, Public Organization). In this cycle 0, proposals are invited to request time on the 40-m TNRT in a Resident Shared Risk Observing (RSRO) style, according to the following details.

Deadline: 30th November 2023, 16:00 UT

LanguageThe proposals are required to be submitted in ENGLISH ONLY

Open-use Period and Total Observing Time

  • Period: 2nd January 2024 - 28th June 2024
  • Total observing time: 500 hours / period

Key Dates



 10th October 2023  Call for Proposals
 1st November  Open a Web-site for the Proposal Submission
 30th November 2023, 16:00 UT  Deadline for the Proposal Submission
 1st - 20th December  Reviewed by Time Allocation Committee
 21st - 25th December  Notification of acceptance / rejection
 2nd January 2024  Initiate Open-use RSRO
 28th June 2024  End of Period for the Cycle 0 Open-use Observation









What's Resident Shared Risk Observing (RSRO) Style?

This style provides an open-use observation time to proposers, as an incentive for contributing to a part of the TNRT development and its commissioning activities, such as,

  • Cooperate to adjust software and polish the pipeline up for the data reduction/calibration,
  • Documentation of such adjustment/polishing-up,
  • Joining applicant's operations,
  • Feedback for contributing to the commissioning (including forthcoming observation modes),
  • etc.

Therefore for this, we request the principal investigator (PI) of a proposal to come to NARIT and/or the TNRO site (Huai Hong Khrai Royal Development Study Centre, Doi Saket District, Chiang Mai, Thailand) and to contribute the aforementioned activities for addressing this RSRO style CfP. If PI is not available, there may be room for replacing by a co-investigator to address this RSRO request. 

In proposals, the technical justification should identify the personnel who will be involved in the effort and which activities are interesting to the candidate. In addition, it is better to describe how their expertise will be helpful to address the critical priorities of the TNRT development relating to their proposal, and better to clarify the proposed dates of the residency as a reference for matching to the TNRT development / commissioning planning.

Privilege for Students

Students have privilege for accepting their proposals. See section "Privilege for Students" for more details.

Observation Mode in Cycle 0

 Receiver  L-band
 Frequency range  1.63 - 1.67 GHz
 Polarization  Linear (Vertical)
 Recording mode  Spectrometer mode for line and continuum target sources
 Frequency channel resolution at max  1.907 kHz ( = 0.347 km/s at 1.65 GHz)
 Scanning modes
  • Single-pointing
  • Cross-scan
  • Raster-scan



*** See "L-band System" and "Status Report" for the specification and practical performances ***


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