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Proceedings Paper • new

Commissioning status of the Greenland Telescope (GLT)
Author(s): Satoki Matsushita; Keiichi Asada; Makoto Inoue; Hiroaki Nishioka; Chih-Wei L. Huang; Nimesh A. Patel; Jun Yi Koay; Shoko Koyama; Patrick Koch; Zheng Meyer-Zhao; Lupin C.-C. Lin; Paul T. P. Ho; Ming-Tang Chen; Timothy J. Norton; Kuan-Yu Liu; Chen-Yu Yu; Do-Young Byun; Juan-Carlos Algaba Marcos; Alex Allardi; Geoffrey C. Bower; Shu-Hao Chang; Chung-Chen Chen; Ryan Chilson; Aaron Faber; Chih-Chiang Han; Yau-De Huang; Homin Jiang; Derek Kubo; Ching-Tang Liu; Wen-Ping Lo; Pierre Martin-Cocher; Masanori Nakamura; George Nystrom; Peter Oshiro; Hung-Yi Pu; Philippe Raffin; Paul Shaw; Williams Snow; Ranjani Srinivasan; Ta-Shun Wei; Ryan Berthold; Daniel Bintley; Jessica Dempsey; Per Friberg; Craig Walther; Jonathan Weintroub; André Young; Ken Young; T. K. Sridharan; Sheperd S. Doeleman; Roger Brissenden; Hideo Ogawa; Kimihiro Kimura; Yutaka Hasegawa; Jinchi Hao; Kou-Chang Han; Song-Chu Chang; Li-Ming Lu
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Paper Abstract

The Greenland Telescope completed its construction, so the commissioning phase has been started since December 2017. Single-dish commissioning has started from the optical pointing which produced the first pointing model, followed by the radio pointing and focusing using the Moon for both the 86 GHz and the 230 GHz receivers. After Venus started to rise from the horizon, the focus positions has been improved for both receivers. Once we started the line pointing using the SiO(2-1) maser line and the CO(2-1) line for the 86 GHz and the 230 GHz receivers, respectively, the pointing accuracy also improved, and the final pointing accuracy turned to be around 3" - 5" for both receivers. In parallel, VLBI commissioning has been performed, with checking the frequency accuracy and the phase stability for all the components that would be used for the VLBI observations. After all the checks, we successfully joined the dress rehearsals and actual observations of the 86 GHz and 230 GHz VLBI observations, The first dress rehearsal data between GLT and ALMA were correlated, and successfully detected the first fringe, which confirmed that the GLT commissioning was successfully performed.

Paper Details

Date Published: 6 July 2018
PDF: 10 pages
Proc. SPIE 10700, Ground-based and Airborne Telescopes VII, 1070029 (6 July 2018); doi: 10.1117/12.2310046
Show Author Affiliations
Satoki Matsushita, Institute of Astronomy and Astrophysics (Taiwan)
Keiichi Asada, Institute of Astronomy and Astrophysics (Taiwan)
Makoto Inoue, Institute of Astronomy and Astrophysics (Taiwan)
Hiroaki Nishioka, Institute of Astronomy and Astrophysics (Taiwan)
Chih-Wei L. Huang, Institute of Astronomy and Astrophysics (Taiwan)
Nimesh A. Patel, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Jun Yi Koay, Institute of Astronomy and Astrophysics (Taiwan)
Shoko Koyama, Institute of Astronomy and Astrophysics (Taiwan)
Patrick Koch, Institute of Astronomy and Astrophysics (Taiwan)
Zheng Meyer-Zhao, Institute of Astronomy and Astrophysics (Taiwan)
Lupin C.-C. Lin, Institute of Astronomy and Astrophysics (Taiwan)
Paul T. P. Ho, Institute of Astronomy and Astrophysics (Taiwan)
East Asian Observatory (United States)
Ming-Tang Chen, Institute of Astronomy and Astrophysics (Taiwan)
Timothy J. Norton, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Kuan-Yu Liu, Institute of Astronomy and Astrophysics (Taiwan)
Chen-Yu Yu, Institute of Astronomy and Astrophysics (Taiwan)
Do-Young Byun, Korea Astronomy and Space Science Institute (Korea, Republic of)
Juan-Carlos Algaba Marcos, Institute of Astronomy and Astrophysics (Taiwan)
Alex Allardi, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Geoffrey C. Bower, Institute of Astronomy and Astrophysics (Taiwan)
Shu-Hao Chang, Institute of Astronomy and Astrophysics (Taiwan)
Chung-Chen Chen, Institute of Astronomy and Astrophysics (Taiwan)
Ryan Chilson, Institute of Astronomy and Astrophysics (Taiwan)
Aaron Faber, Institute of Astronomy and Astrophysics (Taiwan)
Chih-Chiang Han, Institute of Astronomy and Astrophysics (Taiwan)
Yau-De Huang, Institute of Astronomy and Astrophysics (Taiwan)
Homin Jiang, Institute of Astronomy and Astrophysics (Taiwan)
Derek Kubo, Institute of Astronomy and Astrophysics (Taiwan)
Ching-Tang Liu, National Chung-Shan Institute of Science and Technology (Taiwan)
Wen-Ping Lo, Institute of Astronomy and Astrophysics (Taiwan)
Pierre Martin-Cocher, Institute of Astronomy and Astrophysics (Taiwan)
Masanori Nakamura, Institute of Astronomy and Astrophysics (Taiwan)
George Nystrom, Institute of Astronomy and Astrophysics (Taiwan)
Peter Oshiro, Institute of Astronomy and Astrophysics (Taiwan)
Hung-Yi Pu, Institute of Astronomy and Astrophysics (Taiwan)
Philippe Raffin, Institute of Astronomy and Astrophysics (Taiwan)
Paul Shaw, Institute of Astronomy and Astrophysics (Taiwan)
Williams Snow, Institute of Astronomy and Astrophysics (Taiwan)
Ranjani Srinivasan, Institute of Astronomy and Astrophysics (Taiwan)
Ta-Shun Wei, Institute of Astronomy and Astrophysics (Taiwan)
Ryan Berthold, East Asian Observatory (United States)
Daniel Bintley, East Asian Observatory (United States)
Jessica Dempsey, East Asian Observatory (United States)
Per Friberg, East Asian Observatory (United States)
Craig Walther, East Asian Observatory (United States)
Jonathan Weintroub, Harvard-Smithsonian Ctr. for Astrophysics (United States)
André Young, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Ken Young, Harvard-Smithsonian Ctr. for Astrophysics (United States)
T. K. Sridharan, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Sheperd S. Doeleman, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Roger Brissenden, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Hideo Ogawa, Osaka Prefecture Univ. (Japan)
Kimihiro Kimura, Osaka Prefecture Univ. (Japan)
Yutaka Hasegawa, Osaka Prefecture Univ. (Japan)
Jinchi Hao, National Chung-Shan Institute of Science and Technology (Taiwan)
Kou-Chang Han, National Chung-Shan Institute of Science and Technology (Taiwan)
Song-Chu Chang, National Chung-Shan Institute of Science and Technology (Taiwan)
Li-Ming Lu, National Chung-Shan Institute of Science and Technology (Taiwan)


Published in SPIE Proceedings Vol. 10700:
Ground-based and Airborne Telescopes VII
Heather K. Marshall; Jason Spyromilio; Roberto Gilmozzi, Editor(s)

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