Control and monitoring software for the Greenland Telescope

Chih-Wei Locutus Huang; Satoki Matsushita; Nimesh A. Patel; Ranjani Srinivasan; Keiichi Asada; Geoffrey Bower; Shu-Hao Chang; Chung-Cheng Chen; Ming-Tang Chen; Ryan Chilson; Chih-Chiang Han; Paul T. P. Ho; Yau-De Huang; Makoto Inoue; Homin Jiang; Jun Yi Koay; Patrick M. Koch; Shoko Koyama; Derek Y. Kubo; Cheng-Yu Kuo; Chao-Te Li; Ching-Tang Liu; Kuan-Yu Liu; Wen-Ping Lo; Pierre Martin-Cocher; Masanori Nakamura; Timothy J. Norton; George Nystrom; Peter Oshiro; Jongho Park; Hung-Yi Pu; Philippe Raffin; Ramprasad Rao; Cristina Romero-Cañizales; Paul Shaw; T. K. Sridharan; Ta-Shun Wei; Chen-Yu Yu

doi:10.1117/12.2561430

13 December 2020 Control and monitoring software for the Greenland Telescope

Chih-Wei Locutus Huang, Satoki Matsushita, Nimesh A. Patel, Ranjani Srinivasan, Keiichi Asada, Geoffrey Bower, Shu-Hao Chang, Chung-Cheng Chen, Ming-Tang Chen, Ryan Chilson, Chih-Chiang Han, Paul T. P. Ho, Yau-De Huang, Makoto Inoue, Homin Jiang, Jun Yi Koay, Patrick M. Koch, Shoko Koyama, Derek Y. Kubo, Cheng-Yu Kuo, Chao-Te Li, Ching-Tang Liu, Kuan-Yu Liu, Wen-Ping Lo, Pierre Martin-Cocher, Masanori Nakamura, Timothy J. Norton, George Nystrom, Peter Oshiro, Jongho Park, Hung-Yi Pu, Philippe Raffin, Ramprasad Rao, Cristina Romero-Cañizales, Paul Shaw, T. K. Sridharan, Ta-Shun Wei, Chen-Yu Yu

Author Affiliations +

Proceedings Volume 11452, Software and Cyberinfrastructure for Astronomy VI; 114521S (2020) https://doi.org/10.1117/12.2561430
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

We describe the latest development of the control and monitoring system of the Greenland Telescope (GLT). The GLT is a 12-m radio telescope aiming to carry out the sub-millimeter Very Long Baseline Interferometry (VLBI) observations through the Event Horizon Telescope (EHT) and the Global Millimeter VLBI Array (GMVA), to image the shadows of super massive black holes. The telescope is currently located at the Thule Air Base for commissioning before deployed to the Summit Station. The GLT participated in the VLBI observing campaigns in 2018 and 2019 and fringes were successfully detected at 86 and 230 GHz. Our antenna control software was adapted from the Submillimeter Array (SMA), and as a result for single-dish observations we added new routines to coordinate it with other instruments. We are exploring new communication interfaces; we utilized both in-memory and on-disk databases to be part of the interfaces not only for hardware monitoring but also for engineering event logging. We plan to incorporate the system of the James Clerk Maxwell Telescope for the full Linux-based receiver control. The current progress of integrating our receivers, spectrometers, sub-reflector, and continuum detector into control is presented, together with the implementation of the commissioning software for spectral line pointing. We also describe how we built the anti-collision protection and the recovery mechanism for the sub-reflector hexapod.

Citation Download Citation

Chih-Wei Locutus Huang, Satoki Matsushita, Nimesh A. Patel, Ranjani Srinivasan, Keiichi Asada, Geoffrey Bower, Shu-Hao Chang, Chung-Cheng Chen, Ming-Tang Chen, Ryan Chilson, Chih-Chiang Han, Paul T. P. Ho, Yau-De Huang, Makoto Inoue, Homin Jiang, Jun Yi Koay, Patrick M. Koch, Shoko Koyama, Derek Y. Kubo, Cheng-Yu Kuo, Chao-Te Li, Ching-Tang Liu, Kuan-Yu Liu, Wen-Ping Lo, Pierre Martin-Cocher, Masanori Nakamura, Timothy J. Norton, George Nystrom, Peter Oshiro, Jongho Park, Hung-Yi Pu, Philippe Raffin, Ramprasad Rao, Cristina Romero-Cañizales, Paul Shaw, T. K. Sridharan, Ta-Shun Wei, and Chen-Yu Yu "Control and monitoring software for the Greenland Telescope", Proc. SPIE 11452, Software and Cyberinfrastructure for Astronomy VI, 114521S (13 December 2020); https://doi.org/10.1117/12.2561430

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available