The meteorological stations of the 1.5 and 0.84 m telescopes of the OAN: description and results

Meteorological stations for the 1.5 and 0.84 m telescopes at the ObservatorioAstronómico Nacional at San Pedro Mártir (OAN) are described. The stations includedevices for measuring temperature, atmospheric pressure, relative humidityand wind conditions. All the meteorological variables are monitored...

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Bibliographic Details
Authors: E. Arroyo, J. Bohigas, S. Zazueta, R. Michel
Format: article
Status:Published version
Publication Date:2001
Country:México
Institution:Universidad Nacional Autónoma de México
Repository:Redalyc-UNAM
OAI Identifier:oai:redalyc.org:57137205
Online Access:https://www.redalyc.org/articulo.oa?id=57137205
Access Level:Open access
Keyword:Física, Astronomía y Matemáticas
SITE TESTING
INSTRUMENTATION
ATMOSPHERIC EFFECTS
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spelling The meteorological stations of the 1.5 and 0.84 m telescopes of the OAN: description and resultsE. ArroyoJ. BohigasS. ZazuetaR. MichelFísica, Astronomía y MatemáticasSITE TESTINGINSTRUMENTATIONATMOSPHERIC EFFECTSMeteorological stations for the 1.5 and 0.84 m telescopes at the ObservatorioAstronómico Nacional at San Pedro Mártir (OAN) are described. The stations includedevices for measuring temperature, atmospheric pressure, relative humidityand wind conditions. All the meteorological variables are monitored continuouslyand mean values are determined every 5 minutes and written on the hard disk ofthe control computer. This information is continuously refreshed in an HTML pagethat can be accessed from the OAN home page. In this paper we present the resultsof measurements taken over 2 years. We find that both primary mirrors aresubstantially warmer than the surrounding air during the night (up to 5 C).This thermal gradient degrades image quality. For the primary mirror of the 1.5 mtelescope this effect can be corrected with a temperature control system. For the0.84 m telescope, where the primary mirror is located in a closed structure, ventilatorsmoving air from the dome into the closed tube may suffice. During the nightthe air is colder within both domes than outside, and we conclude that no domeventilation is necessary in these telescopes.Universidad Nacional Autónoma de México2001info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdf0185-1101https://www.redalyc.org/articulo.oa?id=57137205Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.37reponame:Redalyc-UNAMinstname:Universidad Nacional Autónoma de Méxicoinstacron:UNAMenhttp://www.redalyc.org/revista.oa?id=571Revista Mexicana de Astronomía y Astrofísicainfo:eu-repo/semantics/openAccessoai:redalyc.org:571372052025-09-03T18:06:27Z
dc.title.none.fl_str_mv The meteorological stations of the 1.5 and 0.84 m telescopes of the OAN: description and results
title The meteorological stations of the 1.5 and 0.84 m telescopes of the OAN: description and results
spellingShingle The meteorological stations of the 1.5 and 0.84 m telescopes of the OAN: description and results
E. Arroyo
Física, Astronomía y Matemáticas
SITE TESTING
INSTRUMENTATION
ATMOSPHERIC EFFECTS
title_short The meteorological stations of the 1.5 and 0.84 m telescopes of the OAN: description and results
title_full The meteorological stations of the 1.5 and 0.84 m telescopes of the OAN: description and results
title_fullStr The meteorological stations of the 1.5 and 0.84 m telescopes of the OAN: description and results
title_full_unstemmed The meteorological stations of the 1.5 and 0.84 m telescopes of the OAN: description and results
title_sort The meteorological stations of the 1.5 and 0.84 m telescopes of the OAN: description and results
dc.creator.none.fl_str_mv E. Arroyo
J. Bohigas
S. Zazueta
R. Michel
author E. Arroyo
author_facet E. Arroyo
J. Bohigas
S. Zazueta
R. Michel
author_role author
author2 J. Bohigas
S. Zazueta
R. Michel
author2_role author
author
author
dc.subject.none.fl_str_mv Física, Astronomía y Matemáticas
SITE TESTING
INSTRUMENTATION
ATMOSPHERIC EFFECTS
topic Física, Astronomía y Matemáticas
SITE TESTING
INSTRUMENTATION
ATMOSPHERIC EFFECTS
description Meteorological stations for the 1.5 and 0.84 m telescopes at the ObservatorioAstronómico Nacional at San Pedro Mártir (OAN) are described. The stations includedevices for measuring temperature, atmospheric pressure, relative humidityand wind conditions. All the meteorological variables are monitored continuouslyand mean values are determined every 5 minutes and written on the hard disk ofthe control computer. This information is continuously refreshed in an HTML pagethat can be accessed from the OAN home page. In this paper we present the resultsof measurements taken over 2 years. We find that both primary mirrors aresubstantially warmer than the surrounding air during the night (up to 5 C).This thermal gradient degrades image quality. For the primary mirror of the 1.5 mtelescope this effect can be corrected with a temperature control system. For the0.84 m telescope, where the primary mirror is located in a closed structure, ventilatorsmoving air from the dome into the closed tube may suffice. During the nightthe air is colder within both domes than outside, and we conclude that no domeventilation is necessary in these telescopes.
publishDate 2001
dc.date.none.fl_str_mv 2001
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0185-1101
https://www.redalyc.org/articulo.oa?id=57137205
identifier_str_mv 0185-1101
url https://www.redalyc.org/articulo.oa?id=57137205
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv http://www.redalyc.org/revista.oa?id=571
dc.rights.none.fl_str_mv Revista Mexicana de Astronomía y Astrofísica
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Revista Mexicana de Astronomía y Astrofísica
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Nacional Autónoma de México
publisher.none.fl_str_mv Universidad Nacional Autónoma de México
dc.source.none.fl_str_mv Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.37
reponame:Redalyc-UNAM
instname:Universidad Nacional Autónoma de México
instacron:UNAM
instname_str Universidad Nacional Autónoma de México
instacron_str UNAM
institution UNAM
reponame_str Redalyc-UNAM
collection Redalyc-UNAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 14.965132

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