Solar observations at the Coimbra Astronomical Observatory

In 2020, the Geophysical and Astronomical Observatory of the University of Coimbra will celebrate the 95th anniversary of its first spectroheliographic observation. Keeping a daily service of solar observations since then, making almost a century, led to one of the largest continuous solar data coll...

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Main Authors: Lourenço Ana, Carvalho Sara, Barata Teresa, Garcia Adriana, Carrasco Víctor, Peixinho Nuno
Format: Article
Language:English
Published: De Gruyter 2019-09-01
Series:Open Astronomy
Subjects:
Online Access:https://doi.org/10.1515/astro-2019-0015
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author Lourenço Ana
Carvalho Sara
Barata Teresa
Garcia Adriana
Carrasco Víctor
Peixinho Nuno
author_facet Lourenço Ana
Carvalho Sara
Barata Teresa
Garcia Adriana
Carrasco Víctor
Peixinho Nuno
author_sort Lourenço Ana
collection DOAJ
description In 2020, the Geophysical and Astronomical Observatory of the University of Coimbra will celebrate the 95th anniversary of its first spectroheliographic observation. Keeping a daily service of solar observations since then, making almost a century, led to one of the largest continuous solar data collections in the world. This long–term solar database is essential for studies where solar activity is involved. This work reviews the development of synoptic observations made at the Observatory of Coimbra since 1925 and presents a summary of some of the principal stages of the Observatory’s history since its founding in 1772. We refer the main technical improvements and present some perspectives for the near future. One of the most significant upgrades was the installation of a CCD camera in 2007. The transition from photographic emulsion to digital recording methods allowed the development of image analysis algorithms to process solar images and improved data sharing with other institutions. This upgrade enabled also to carry–out modern climate and space weather studies. This valuable advancement makes it possible to create a new catalogue of solar observations to be published in the future.
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spelling doaj.art-4a9f9415dffe446e93914ff26f151bf42022-12-21T19:22:00ZengDe GruyterOpen Astronomy2543-63762019-09-0128116517910.1515/astro-2019-0015astro-2019-0015Solar observations at the Coimbra Astronomical ObservatoryLourenço Ana0Carvalho Sara1Barata Teresa2Garcia Adriana3Carrasco Víctor4Peixinho Nuno5CITEUC–Centre for Earth and Space Research of the University of Coimbra, Rua do Observatório, s/n, 3040–004 Coimbra, Portugal; OGA–Geophysical and Astronomical Observatory of the University of Coimbra, Rua do Observatório, s/n, 3040–004 Coimbra, PortugalCITEUC–Centre for Earth and Space Research of the University of Coimbra, Rua do Observatório, s/n, 3040–004 Coimbra, Portugal; CMUC–Centre for Mathematics, University of Coimbra, 3001–501 Coimbra, PortugalCITEUC–Centre for Earth and Space Research of the University of Coimbra, Rua do Observatório, s/n, 3040–004 Coimbra, Portugal; OGA–Geophysical and Astronomical Observatory of the University of Coimbra, Rua do Observatório, s/n, 3040–004 Coimbra, PortugalCITEUC–Centre for Earth and Space Research of the University of Coimbra, Rua do Observatório, s/n, 3040–004 Coimbra, Portugal; OGA–Geophysical and Astronomical Observatory of the University of Coimbra, Rua do Observatório, s/n, 3040–004 Coimbra, PortugalDepartamento de Física, Universidad de Extremadura, 06071Badajoz, Spain; Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, 06006Badajoz, SpainCITEUC–Centre for Earth and Space Research of the University of Coimbra, Rua do Observatório, s/n, 3040–004 Coimbra, Portugal; OGA–Geophysical and Astronomical Observatory of the University of Coimbra, Rua do Observatório, s/n, 3040–004 Coimbra, PortugalIn 2020, the Geophysical and Astronomical Observatory of the University of Coimbra will celebrate the 95th anniversary of its first spectroheliographic observation. Keeping a daily service of solar observations since then, making almost a century, led to one of the largest continuous solar data collections in the world. This long–term solar database is essential for studies where solar activity is involved. This work reviews the development of synoptic observations made at the Observatory of Coimbra since 1925 and presents a summary of some of the principal stages of the Observatory’s history since its founding in 1772. We refer the main technical improvements and present some perspectives for the near future. One of the most significant upgrades was the installation of a CCD camera in 2007. The transition from photographic emulsion to digital recording methods allowed the development of image analysis algorithms to process solar images and improved data sharing with other institutions. This upgrade enabled also to carry–out modern climate and space weather studies. This valuable advancement makes it possible to create a new catalogue of solar observations to be published in the future.https://doi.org/10.1515/astro-2019-0015historic solar observationsspectroheliogramssolar phenomenaautomatic detection
spellingShingle Lourenço Ana
Carvalho Sara
Barata Teresa
Garcia Adriana
Carrasco Víctor
Peixinho Nuno
Solar observations at the Coimbra Astronomical Observatory
Open Astronomy
historic solar observations
spectroheliograms
solar phenomena
automatic detection
title Solar observations at the Coimbra Astronomical Observatory
title_full Solar observations at the Coimbra Astronomical Observatory
title_fullStr Solar observations at the Coimbra Astronomical Observatory
title_full_unstemmed Solar observations at the Coimbra Astronomical Observatory
title_short Solar observations at the Coimbra Astronomical Observatory
title_sort solar observations at the coimbra astronomical observatory
topic historic solar observations
spectroheliograms
solar phenomena
automatic detection
url https://doi.org/10.1515/astro-2019-0015
work_keys_str_mv AT lourencoana solarobservationsatthecoimbraastronomicalobservatory
AT carvalhosara solarobservationsatthecoimbraastronomicalobservatory
AT baratateresa solarobservationsatthecoimbraastronomicalobservatory
AT garciaadriana solarobservationsatthecoimbraastronomicalobservatory
AT carrascovictor solarobservationsatthecoimbraastronomicalobservatory
AT peixinhonuno solarobservationsatthecoimbraastronomicalobservatory