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 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; Tirupati K. Sridharan; Ranjani Srinivasan; Ta Shun Wei; Chen Yu Yu

doi:10.1117/12.2561491

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 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, Tirupati K. Sridharan, Ranjani Srinivasan, Ta Shun Wei, Chen Yu Yu

^*此作品的通信作者

物理學系

研究成果: 書貢獻/報告類型 › 會議論文篇章

5 引文斯高帕斯（Scopus）

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	https://doi.org/10.1117/12.2561491
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 12月 14 → 2020 12月 22

出版系列

名字	Proceedings of SPIE - The International Society for Optical Engineering
卷	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	2020/12/14 → 2020/12/22

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

存取文件

10.1117/12.2561491

其它文件與鏈接

引用此

Koay, J. Y., Matsushita, S., Asada, K., Patel, N. A., Huang, C. W. L., Bower, G., Chang, S. H., Chen, M. T., Chen, C. C., Chilson, R., Han, C. C., Ho, P. T. P., Huang, Y. D., Inoue, M., Jiang, H., Koch, P. M., Koyama, S., Kuo, C. Y., Kubo, D., ... Yu, C. Y. (2020). Status of scientific commissioning of the Greenland Telescope. 於 H. K. Marshall, J. Spyromilio, & T. Usuda (編輯), Ground-Based and Airborne Telescopes VIII 文章 114450Q (Proceedings of SPIE - The International Society for Optical Engineering; 卷 11445). SPIE. https://doi.org/10.1117/12.2561491

Status of scientific commissioning of the Greenland Telescope. / Koay, Jun Yi; Matsushita, Satoki; Asada, Keiichi 等.
Ground-Based and Airborne Telescopes VIII. 編輯 / Heather K. Marshall; Jason Spyromilio; Tomonori Usuda. SPIE, 2020. 114450Q (Proceedings of SPIE - The International Society for Optical Engineering; 卷 11445).

研究成果: 書貢獻/報告類型 › 會議論文篇章

Koay, JY, Matsushita, S, Asada, K, Patel, NA, Huang, CWL, Bower, G, Chang, SH, Chen, MT, Chen, CC, Chilson, R, Han, CC, Ho, PTP, Huang, YD, Inoue, M, Jiang, H, Koch, PM, Koyama, S, Kuo, CY, Kubo, D, Li, CT, Liu, CT, Liu, KY, Lo, WP, Martin-Cocher, P, Nakamura, M, Norton, TJ, Nystrom, G, Oshiro, P, Park, J, Pu, HY, Raffin, P, Rao, R, Romero-Cañizales, C, Shaw, P, Sridharan, TK, Srinivasan, R, Wei, TS & Yu, CY 2020, Status of scientific commissioning of the Greenland Telescope. 於 HK Marshall, J Spyromilio & T Usuda (編輯), Ground-Based and Airborne Telescopes VIII., 114450Q, Proceedings of SPIE - The International Society for Optical Engineering, 卷 11445, SPIE, Ground-Based and Airborne Telescopes VIII 2020, Virtual, Online, 美国, 2020/12/14. https://doi.org/10.1117/12.2561491

@inproceedings{7a2b21b6efcc40e1b92013625cc88e3b,

title = "Status of scientific commissioning of the Greenland Telescope",

abstract = "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.",

keywords = "Commissioning, Greenland Telescope, Submillimeter-Wave, Supermassive black hole, Very Long Baseline Interferometry (VLBI)",

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

note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; Ground-Based and Airborne Telescopes VIII 2020 ; Conference date: 14-12-2020 Through 22-12-2020",

year = "2020",

doi = "10.1117/12.2561491",

language = "English",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "Marshall, \{Heather K.\} and Jason Spyromilio and Tomonori Usuda",

booktitle = "Ground-Based and Airborne Telescopes VIII",

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TY - GEN

T1 - Status of scientific commissioning of the Greenland Telescope

AU - Koay, Jun Yi

AU - Matsushita, Satoki

AU - Asada, Keiichi

AU - Patel, Nimesh A.

AU - Huang, Chih Wei L.

AU - Bower, Geoffrey

AU - Chang, Shu Hao

AU - Chen, Ming Tang

AU - Chen, Chung Cheng

AU - Chilson, Ryan

AU - Han, Chih Chiang

AU - Ho, Paul T.P.

AU - Huang, Yau De

AU - Inoue, Makoto

AU - Jiang, Homin

AU - Koch, Patrick M.

AU - Koyama, Shoko

AU - Kuo, Cheng Yu

AU - Kubo, Derek

AU - Li, Chao Te

AU - Liu, Ching Tang

AU - Liu, Kuan Yu

AU - Lo, Wen Ping

AU - Martin-Cocher, Pierre

AU - Nakamura, Masanori

AU - Norton, Timothy J.

AU - Nystrom, George

AU - Oshiro, Peter

AU - Park, Jongho

AU - Pu, Hung Yi

AU - Raffin, Philippe

AU - Rao, Ramprasad

AU - Romero-Cañizales, Cristina

AU - Shaw, Paul

AU - Sridharan, Tirupati K.

AU - Srinivasan, Ranjani

AU - Wei, Ta Shun

AU - Yu, Chen Yu

PY - 2020

Y1 - 2020

N2 - 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.

AB - 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.

KW - Commissioning

KW - Greenland Telescope

KW - Submillimeter-Wave

KW - Supermassive black hole

KW - Very Long Baseline Interferometry (VLBI)

UR - https://www.scopus.com/pages/publications/85099786228

UR - https://www.scopus.com/pages/publications/85099786228#tab=citedBy

U2 - 10.1117/12.2561491

DO - 10.1117/12.2561491

M3 - Conference contribution

AN - SCOPUS:85099786228

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Ground-Based and Airborne Telescopes VIII

A2 - Marshall, Heather K.

A2 - Spyromilio, Jason

A2 - Usuda, Tomonori

PB - SPIE

T2 - Ground-Based and Airborne Telescopes VIII 2020

Y2 - 14 December 2020 through 22 December 2020

ER -

Status of scientific commissioning of the Greenland Telescope

摘要

出版系列

會議

ASJC Scopus subject areas

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