Thermalizing a telescope in Antarctica: Analysis of ASTEP observations
The installation and operation of a telescope in Antarctica represent particular challenges, in particular the requirement to operate at extremely cold temperatures, to cope with rapid temperature fluctuations and to prevent frosting. Heating of electronic subsystems is a necessity, but solutions mu...
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ftdatacite:10.48550/arxiv.1506.06009 2023-05-15T13:41:13+02:00 Thermalizing a telescope in Antarctica: Analysis of ASTEP observations Guillot, Tristan Abe, Lyu Agabi, Abdelkrim Rivet, Jean-Pierre Daban, Jean-Baptiste Mekarnia, Djamel Aristidi, Eric Schmider, Francois-Xavier Crouzet, Nicolas Gonçalves, Ivan Gouvret, Carole Ottogalli, Sébastien Faradji, Hélène Blanc, Pierre-Eric Bondoux, Eric Valbousquet, Franck 2015 https://dx.doi.org/10.48550/arxiv.1506.06009 https://arxiv.org/abs/1506.06009 unknown arXiv https://dx.doi.org/10.1002/asna.201512174 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Instrumentation and Methods for Astrophysics astro-ph.IM Earth and Planetary Astrophysics astro-ph.EP Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences article-journal Article ScholarlyArticle Text 2015 ftdatacite https://doi.org/10.48550/arxiv.1506.06009 https://doi.org/10.1002/asna.201512174 2022-04-01T12:05:04Z The installation and operation of a telescope in Antarctica represent particular challenges, in particular the requirement to operate at extremely cold temperatures, to cope with rapid temperature fluctuations and to prevent frosting. Heating of electronic subsystems is a necessity, but solutions must be found to avoid the turbulence induced by temperature fluctua- tions on the optical paths. ASTEP 400 is a 40 cm Newton telescope installed at the Concordia station, Dome C since 2010 for photometric observations of fields of stars and their exoplanets. While the telescope is designed to spread star light on several pixels to maximize photometric stability, we show that it is nonetheless sensitive to the extreme variations of the seeing at the ground level (between about 0.1 and 5 arcsec) and to temperature fluctuations between --30 degrees C and --80 degrees C. We analyze both day-time and night-time observations and obtain the magnitude of the seeing caused by the mirrors, dome and camera. The most important effect arises from the heating of the primary mirror which gives rise to a mirror seeing of 0.23 arcsec K--1 . We propose solutions to mitigate these effects. : Appears in Astronomical Notes / Astronomische Nachrichten, Wiley-VCH Verlag, 2015, pp.1-21 Text Antarc* Antarctica DataCite Metadata Store (German National Library of Science and Technology) Concordia Station ENVELOPE(123.333,123.333,-75.100,-75.100) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Instrumentation and Methods for Astrophysics astro-ph.IM Earth and Planetary Astrophysics astro-ph.EP Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences |
spellingShingle |
Instrumentation and Methods for Astrophysics astro-ph.IM Earth and Planetary Astrophysics astro-ph.EP Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences Guillot, Tristan Abe, Lyu Agabi, Abdelkrim Rivet, Jean-Pierre Daban, Jean-Baptiste Mekarnia, Djamel Aristidi, Eric Schmider, Francois-Xavier Crouzet, Nicolas Gonçalves, Ivan Gouvret, Carole Ottogalli, Sébastien Faradji, Hélène Blanc, Pierre-Eric Bondoux, Eric Valbousquet, Franck Thermalizing a telescope in Antarctica: Analysis of ASTEP observations |
topic_facet |
Instrumentation and Methods for Astrophysics astro-ph.IM Earth and Planetary Astrophysics astro-ph.EP Solar and Stellar Astrophysics astro-ph.SR FOS Physical sciences |
description |
The installation and operation of a telescope in Antarctica represent particular challenges, in particular the requirement to operate at extremely cold temperatures, to cope with rapid temperature fluctuations and to prevent frosting. Heating of electronic subsystems is a necessity, but solutions must be found to avoid the turbulence induced by temperature fluctua- tions on the optical paths. ASTEP 400 is a 40 cm Newton telescope installed at the Concordia station, Dome C since 2010 for photometric observations of fields of stars and their exoplanets. While the telescope is designed to spread star light on several pixels to maximize photometric stability, we show that it is nonetheless sensitive to the extreme variations of the seeing at the ground level (between about 0.1 and 5 arcsec) and to temperature fluctuations between --30 degrees C and --80 degrees C. We analyze both day-time and night-time observations and obtain the magnitude of the seeing caused by the mirrors, dome and camera. The most important effect arises from the heating of the primary mirror which gives rise to a mirror seeing of 0.23 arcsec K--1 . We propose solutions to mitigate these effects. : Appears in Astronomical Notes / Astronomische Nachrichten, Wiley-VCH Verlag, 2015, pp.1-21 |
format |
Text |
author |
Guillot, Tristan Abe, Lyu Agabi, Abdelkrim Rivet, Jean-Pierre Daban, Jean-Baptiste Mekarnia, Djamel Aristidi, Eric Schmider, Francois-Xavier Crouzet, Nicolas Gonçalves, Ivan Gouvret, Carole Ottogalli, Sébastien Faradji, Hélène Blanc, Pierre-Eric Bondoux, Eric Valbousquet, Franck |
author_facet |
Guillot, Tristan Abe, Lyu Agabi, Abdelkrim Rivet, Jean-Pierre Daban, Jean-Baptiste Mekarnia, Djamel Aristidi, Eric Schmider, Francois-Xavier Crouzet, Nicolas Gonçalves, Ivan Gouvret, Carole Ottogalli, Sébastien Faradji, Hélène Blanc, Pierre-Eric Bondoux, Eric Valbousquet, Franck |
author_sort |
Guillot, Tristan |
title |
Thermalizing a telescope in Antarctica: Analysis of ASTEP observations |
title_short |
Thermalizing a telescope in Antarctica: Analysis of ASTEP observations |
title_full |
Thermalizing a telescope in Antarctica: Analysis of ASTEP observations |
title_fullStr |
Thermalizing a telescope in Antarctica: Analysis of ASTEP observations |
title_full_unstemmed |
Thermalizing a telescope in Antarctica: Analysis of ASTEP observations |
title_sort |
thermalizing a telescope in antarctica: analysis of astep observations |
publisher |
arXiv |
publishDate |
2015 |
url |
https://dx.doi.org/10.48550/arxiv.1506.06009 https://arxiv.org/abs/1506.06009 |
long_lat |
ENVELOPE(123.333,123.333,-75.100,-75.100) |
geographic |
Concordia Station |
geographic_facet |
Concordia Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://dx.doi.org/10.1002/asna.201512174 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1506.06009 https://doi.org/10.1002/asna.201512174 |
_version_ |
1766147234522464256 |