Ministerio de Ciencia, Innovación y Universidades Gobierno de Canarias Universidad de La Laguna CSIC Centro de Excelencia Severo Ochoa

Press and Multimedia

Chile and Argentina feature in the next solar eclipse

Jun. 24, 2019

On July 2nd there will be a total eclipse of the sun which will touch land only in Chile, Argentina, and on the island of Oeno a small corral atol in the centre of the Pacific. This astronomical event will be broadcast live via the web, with the collaboration of the Cerro Tololo Observatory (Chile), and STARS4ALL, a project in which the Instituto de Astrofísica de Canarias (IAC) is participating.

A group of researchers, made up of astronomers from the IAC and members of the STARS4ALL project will travel to the CTIO (Cerro Tololol Inter-american Observatory), Chile, to observe and broadcast live this total eclipse of the Sun. The connection will take place at 19.20h Universal Time (UT) (one hour later in the Canaries, two hours later in central Europe, and 15.20 Chilean local time) on July 2nd. The complete phenomenon can be seen via the web.

El complejo CTIO (Cerro Tololo Inter-American Observatory) es parte del Observatorio Nacional de Astronomía Óptica de los Estados Unidos (NOAO), junto con el Observatorio Nacional de Kitt Peak (KPNO), en Tucson, Arizona. NOAO es operado por la Asociación de Universidades para la Investigación en Astronomía (AURA), en virtud de un acuerdo de cooperación con la National Science Foundation (NSF). CTIO, como parte del Observatorio AURA en Chile, opera en Chile bajo la ley chilena, a través de un Acuerdo con la Universidad de Chile y con los auspicios del Ministerio de Relaciones Exteriores de Chile.

The Cerro Tololo Inter-American Observatory, (CTIO) is part of the National Optical Astronomical Observatory (NOAO) of the United States, of which the northern part is the Kitt Peak National Observatory (KPNO) in Tucson, Arizona. NOAO is operated by the Association of Universities for Research in Foreign Relations of Chile.

STARS4ALL is a Public Platform for the Promotion of Dark Skies in Europe via initiatives against Light Pollution (LP) known as, Light Pollution Initiatives. The LPI are local or global working groups who fight light pollution.

Miquel Serra-Ricart, who is in charge of the team involved, comments “It will be a complicated eclipse because as well as taking place in the southern winter the Sun will be only 13 degrees above the western horizon, almost setting. Being sited at the Cerro Tololo Observatory will be a big advantage will solve the logistic problems we have encountered during other eclipses.

Serra-Ricart, an astronomer at the Instituto de Astrofísica de Canarias (IACI) is an experienced eclipse observer. This will he the fifteenth expedition which he will be leading (see The last one was in 2017 in the American State of Idaho. “We waited many years for the “great American eclipse” and it did not let us down. It was a great experience, we obtained very good data, and over a million people connected to the broadcast”, he says.

At the Cerro Tololo Observatory and during the eclipse there will be a number of research activities whose details can be found at:

Several   photometers TESS-W developed at the Complutense University of Madrid (UCM) in the STARS4ALL project, will make measurements of luminosity and temperature during the eclipse. The data obtained will be available for educational activities, and they will be shown in real time at the portal

Three Spanish supercomputing centres, the Extremadura Centre of Advanced Technologies (CETA-CIEMAT) the Consortium of University Servers of Catalonia (CSUC) and the Instituto de Astrofísica de Canarias (IAC) will collaborate in the distribution of the broadcast on the web portal

Contacto IAC: Miquel Serra-Ricart, investigador del IAC,

Broadcasting channels

Cerro Tololo Observatory, Chile (Image of the Sun, and commentaries):
Cerro Tololo Observatory, Chile (sky camera):

APPENDIX 1. of the Eclipse from the Cerro Tololo Observatory (2nd July 2019)

Duration of the total eclipse of the Sun: 2 minutes 06 seconds

Local time = UT- 4 h

Central European Standard Time = UT+ 2 h

Canary Time =UT+ 1h

Contacts, Total Solar EclipseTime (UT)
Beginning of partial eclipse (C1)19:23:10.5
Beginning of total eclipse (C2)20:38:32.4
Eclipse maximum:20:39:35.6   
End of total eclipse (C3)20:40:38.5   
End of partial eclipse (C$)21:46:34.5   

Complet list of press releases | More press releases of year 2019

We use our own cookies and cookies from a third party to gather statistical information to improve our services and our website. If you continue with the navigation, you are accepting the installation and use of these cookies. You can change the configuration of your browser not to accept the installation or you can obtain more information in our Cookie Policy.