Status of scientific commissioning of the Greenland Telescope

Jun Yi Koay*, Satoki Matsushita, Keiichi Asada, Nimesh A. Patel, Chih Wei L. Huang, Geoffrey Bower, Shu Hao Chang, Ming Tang Chen, Chung Cheng Chen, Ryan Chilson, Chih Chiang Han, Paul T.P. Ho, Yau De Huang, Makoto Inoue, Homin Jiang, Patrick M. Koch, Shoko Koyama, Cheng Yu Kuo, Derek Kubo, Chao Te LiChing 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, Tirupati K. Sridharan, Ranjani Srinivasan, Ta Shun Wei, Chen Yu Yu

*此作品的通信作者

研究成果: 書貢獻/報告類型會議論文篇章

摘要

The Greenland Telescope (GLT), currently located at Thule Air Base, is a 12-m single dish telescope operating at frequencies of 86, 230 and 345 GHz. Since April 2018, the GLT has regularly participated in (sub-)mm VLBI observations of supermassive black holes as part of the Event Horizon Telescope (EHT) and the Global mm VLBI Array (GMVA). We present the status of scientific commissioning activities at the GLT, including most recently the 345 GHz first light and test observations. The antenna surface accuracy has been improved to ∼25 microns through panel adjustments aided by photogrammetry, significantly increasing the antenna efficiency. Through all-sky spectral line pointing observations (SiO masers at 86 GHz and CO at 230 and 345 GHz), we have improved the radio pointing accuracy down to <∼ 3"at all 3 frequencies. Due to the pandemic, we are in the process of transitioning GLT commissioning and observing activities to remote operations.

原文英語
主出版物標題Ground-Based and Airborne Telescopes VIII
編輯Heather K. Marshall, Jason Spyromilio, Tomonori Usuda
發行者SPIE
ISBN(電子)9781510636774
DOIs
出版狀態已發佈 - 2020
事件Ground-Based and Airborne Telescopes VIII 2020 - Virtual, Online, 美国
持續時間: 2020 十二月 142020 十二月 22

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
11445
ISSN(列印)0277-786X
ISSN(電子)1996-756X

會議

會議Ground-Based and Airborne Telescopes VIII 2020
國家/地區美国
城市Virtual, Online
期間2020/12/142020/12/22

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學
  • 電腦科學應用
  • 應用數學
  • 電氣與電子工程

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