The Greenland Telescope (GLT): Antenna status and future plans
The ALMA North America Prototype Antenna was awarded to the Smithsonian Astrophysical Observatory (SAO) in 2011. SAO and the Academia Sinica Institute of Astronomy & Astrophysics (ASIAA), SAO's main partner for this project, are working jointly to relocate the antenna to Greenland to carry...
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ftdatacite:10.48550/arxiv.1407.4902 2023-05-15T15:11:08+02:00 The Greenland Telescope (GLT): Antenna status and future plans Raffin, Philippe Algaba-Marcos, Juan Carlos Asada, Keichi Blundell, Raymond Burgos, Roberto Chang, Chih-Cheng Chen, Ming-Tang Christensen, Robert Grimes, Paul K. Han, C. C. Ho, Paul T. P. Huang, Yau-De Inoue, Makoto Koch, Patrick M. Kubo, Derek Leiker, Steve Liu, Ching-Tang Martin-Cocher, Pierre Matsushita, Satoki Nakamura, Masanori Nishioka, Hiroaki Nystrom, George Paine, Scott N. Patel, Nimesh A. Pradel, Nicolas Pu, Hung-Yi Shen, H. -Y. Snow, William Sridharan, T. K. Srinivasan, Ranjani Tong, Edward Wang, Jackie 2014 https://dx.doi.org/10.48550/arxiv.1407.4902 https://arxiv.org/abs/1407.4902 unknown arXiv https://dx.doi.org/10.1117/12.2056836 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences article-journal Article ScholarlyArticle Text 2014 ftdatacite https://doi.org/10.48550/arxiv.1407.4902 https://doi.org/10.1117/12.2056836 2022-04-01T12:46:34Z The ALMA North America Prototype Antenna was awarded to the Smithsonian Astrophysical Observatory (SAO) in 2011. SAO and the Academia Sinica Institute of Astronomy & Astrophysics (ASIAA), SAO's main partner for this project, are working jointly to relocate the antenna to Greenland to carry out millimeter and submillimeter VLBI observations. This paper presents the work carried out on upgrading the antenna to enable operation in the Arctic climate by the GLT Team to make this challenging project possible, with an emphasis on the unexpected telescope components that had to be either redesigned or changed. Five-years of inactivity, with the antenna laying idle in the desert of New Mexico, coupled with the extreme weather conditions of the selected site in Greenland have it necessary to significantly refurbish the antenna. We found that many components did need to be replaced, such as the antenna support cone, the azimuth bearing, the carbon fiber quadrupod, the hexapod, the HVAC, the tiltmeters, the antenna electronic enclosures housing servo and other drive components, and the cables. We selected Vertex, the original antenna manufacturer, for the main design work, which is in progress. The next coming months will see the major antenna components and subsystems shipped to a site of the US East Coast for test-fitting the major antenna components, which have been retrofitted. The following step will be to ship the components to Greenland to carry out VLBI and single dish observations. Antenna reassembly at Summit Station should take place during the summer of 2018. : 10 pages, 8 figures Text Arctic Greenland Greenland Telescope DataCite Metadata Store (German National Library of Science and Technology) Arctic Greenland |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences |
spellingShingle |
Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences Raffin, Philippe Algaba-Marcos, Juan Carlos Asada, Keichi Blundell, Raymond Burgos, Roberto Chang, Chih-Cheng Chen, Ming-Tang Christensen, Robert Grimes, Paul K. Han, C. C. Ho, Paul T. P. Huang, Yau-De Inoue, Makoto Koch, Patrick M. Kubo, Derek Leiker, Steve Liu, Ching-Tang Martin-Cocher, Pierre Matsushita, Satoki Nakamura, Masanori Nishioka, Hiroaki Nystrom, George Paine, Scott N. Patel, Nimesh A. Pradel, Nicolas Pu, Hung-Yi Shen, H. -Y. Snow, William Sridharan, T. K. Srinivasan, Ranjani Tong, Edward Wang, Jackie The Greenland Telescope (GLT): Antenna status and future plans |
topic_facet |
Instrumentation and Methods for Astrophysics astro-ph.IM FOS Physical sciences |
description |
The ALMA North America Prototype Antenna was awarded to the Smithsonian Astrophysical Observatory (SAO) in 2011. SAO and the Academia Sinica Institute of Astronomy & Astrophysics (ASIAA), SAO's main partner for this project, are working jointly to relocate the antenna to Greenland to carry out millimeter and submillimeter VLBI observations. This paper presents the work carried out on upgrading the antenna to enable operation in the Arctic climate by the GLT Team to make this challenging project possible, with an emphasis on the unexpected telescope components that had to be either redesigned or changed. Five-years of inactivity, with the antenna laying idle in the desert of New Mexico, coupled with the extreme weather conditions of the selected site in Greenland have it necessary to significantly refurbish the antenna. We found that many components did need to be replaced, such as the antenna support cone, the azimuth bearing, the carbon fiber quadrupod, the hexapod, the HVAC, the tiltmeters, the antenna electronic enclosures housing servo and other drive components, and the cables. We selected Vertex, the original antenna manufacturer, for the main design work, which is in progress. The next coming months will see the major antenna components and subsystems shipped to a site of the US East Coast for test-fitting the major antenna components, which have been retrofitted. The following step will be to ship the components to Greenland to carry out VLBI and single dish observations. Antenna reassembly at Summit Station should take place during the summer of 2018. : 10 pages, 8 figures |
format |
Text |
author |
Raffin, Philippe Algaba-Marcos, Juan Carlos Asada, Keichi Blundell, Raymond Burgos, Roberto Chang, Chih-Cheng Chen, Ming-Tang Christensen, Robert Grimes, Paul K. Han, C. C. Ho, Paul T. P. Huang, Yau-De Inoue, Makoto Koch, Patrick M. Kubo, Derek Leiker, Steve Liu, Ching-Tang Martin-Cocher, Pierre Matsushita, Satoki Nakamura, Masanori Nishioka, Hiroaki Nystrom, George Paine, Scott N. Patel, Nimesh A. Pradel, Nicolas Pu, Hung-Yi Shen, H. -Y. Snow, William Sridharan, T. K. Srinivasan, Ranjani Tong, Edward Wang, Jackie |
author_facet |
Raffin, Philippe Algaba-Marcos, Juan Carlos Asada, Keichi Blundell, Raymond Burgos, Roberto Chang, Chih-Cheng Chen, Ming-Tang Christensen, Robert Grimes, Paul K. Han, C. C. Ho, Paul T. P. Huang, Yau-De Inoue, Makoto Koch, Patrick M. Kubo, Derek Leiker, Steve Liu, Ching-Tang Martin-Cocher, Pierre Matsushita, Satoki Nakamura, Masanori Nishioka, Hiroaki Nystrom, George Paine, Scott N. Patel, Nimesh A. Pradel, Nicolas Pu, Hung-Yi Shen, H. -Y. Snow, William Sridharan, T. K. Srinivasan, Ranjani Tong, Edward Wang, Jackie |
author_sort |
Raffin, Philippe |
title |
The Greenland Telescope (GLT): Antenna status and future plans |
title_short |
The Greenland Telescope (GLT): Antenna status and future plans |
title_full |
The Greenland Telescope (GLT): Antenna status and future plans |
title_fullStr |
The Greenland Telescope (GLT): Antenna status and future plans |
title_full_unstemmed |
The Greenland Telescope (GLT): Antenna status and future plans |
title_sort |
greenland telescope (glt): antenna status and future plans |
publisher |
arXiv |
publishDate |
2014 |
url |
https://dx.doi.org/10.48550/arxiv.1407.4902 https://arxiv.org/abs/1407.4902 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Greenland Telescope |
genre_facet |
Arctic Greenland Greenland Telescope |
op_relation |
https://dx.doi.org/10.1117/12.2056836 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1407.4902 https://doi.org/10.1117/12.2056836 |
_version_ |
1766342043456503808 |