workshop in Spanish

Virtual Workshop on the use of the Europlanet Telescope Network for amateur astronomers.

The Europlanet 2024 RI project funds access to and use of a network of telescopes (the Europlanet Telescope Network) for the astronomical observation of Solar System objects and exoplanets. One of the objectives of this network is to train and support amateur astronomers in the observations of Solar System objects (planets, asteroids, comets ...), encouraging their participation in Pro-Am collaborations within the scientific fields of the Solar System and exoplanets research.

On May 15, 2021 (Saturday) we will organize an virtual workshop dedicated to the amateur community, which aims to demonstrate the use of the telescopes within the Europlanet Telescope nNetwork to amateur astronomers. The workshop will be held in Spanish and will use the Calar Alto 1.23m telescope for practical demonstrations showing its remote use.

It is necessary to make prior registration.  Contacts:  This email address is being protected from spambots. You need JavaScript enabled to view it., This email address is being protected from spambots. You need JavaScript enabled to view it.

We are Astróbriga, the astronomical group of Ciudad Rodrigo.

We have a dream: to build the first model of the solar system in three dimensions and to scale in Spain. Where? In the region of Ciudad Rodrigo.

We are talking about a solar system so large that Pluto will be on the border with Portugal. We are also talking about a comprehensive project, capable of providing economic alternatives in the area, stimulating the intellectual curiosity of youth and creating new vocations.

A project that will be the pride of the entire region.

• The project consists of establishing a reproduction of the solar system, to scale, in the Ciudad Rodrigo region.
• The model will not be an end in itself, but a tool to carry out activities aimed at promoting the region on a tourist level and developing educational and scientific dissemination activities in the area.
• Not only will it be the first permanent model, in three dimensions and to scale in Spain, but it will also be, without a doubt, one of the most ambitious and complete in the world.

The Sun - With a diameter of 4.80m and composed of about 2000 brass hands, the Sun will be located in the Rotunda of the Fat Tree, and Pluto will be located about 25 kilometers away. To give you an idea, the diameter of the Sun of most of the scale models of solar systems that you can find in the world rotates between 1 and 2 meters. The planets and their moons (15 in total) will float on monoliths made up of a Corten steel base topped by an armored glass cube. Each element of the system will be accompanied by an informative poster and a signage that will show where the other elements of the model are. The monoliths will be equipped with an internal lighting system that will allow you to visit the system at night.

A project with a pedagogical vocation

Support from the scientific community

Astróbriga has the valuable support of Javier Rodriguez-Pacheco Martín (Universidad de Alcalá), Antonia Varela, (researcher at the Instituto de Astrofísica de Canarias and director of the Starlight Foundation), Sebastián Sánchez Prieto (Universidad de Alcalá), Fernando Buitrago (Instituto de Astrofísica e Ciências do Espaço de Lisboa), as well Laura Delgado Martín, Diego Corrochano Fernández, Pablo Herrero Teijón, Santiago Andrés Sánchez y Camilo Ruiz Méndez, all members of the Departamento de Didáctica de la Matemática y de las Ciencias Experimentales de la Universidad de Salamanca, they have also expressed their willingness to do outreach work within the framework of the project.

Support from other institutions

We also have the support of the Museo de Ciencias de Valladolid, la Federación Asociaciones Astronómicas de España, la Revista Astronomía, la Fundación Starlight, as well the Asociación para la Enseñanza de la Astronomía, la Organización Salmantina de Astronáutica y del Espacio or the Asociación Estudiantil de Astronomía Supernova. In addition to the Heritage Commission of the Province of Salamanca, the Ayuntamiento de Ciudad Rodrigo, FECYT, GMV and a variety of local and private companies and businesses that you can join.

Dear observers:

During these days at the end of the year, a unique astronomical event is taking place with the great conjunction of the planets Jupiter and Saturn that will reach a relative distance of just over 6 arc minutes on the night of December 21. This very close planetary conjunction has not occurred with this closeness since 1623 and the next comparable conjunction will be in 2080. Even with a modest telescope it will be possible to see both planets, the rings of Saturn and the main satellites of both planets in the same visual field. As you know, both planets are low in our night skies at a maximum height of less than 30º and visible at the beginning of the night towards the West.

From the Spanish-Portuguese node of the Europlanet Society, the Spanish Astronomy Society, the Federation of Astronomical Associations of Spain and Astronomers without Borders we are organizing a set of activities to celebrate this astronomical event and the pleasure of night observation. We think that the joint vision of Jupiter and Saturn is an inspiring image, a true meeting of giants capable of raising our gaze towards the sky. We would very much like to have your observation of both planets. Whether you are a fan of deep sky astrophotography, or if you prefer planetary photography or even night landscapes, we invite you to observe these planets during the next few nights and send us your observations to the photo gallery that we are preparing.

The activities of this gathering of giants are avalaible here and include events to disseminate on the internet, retransmission of the conjunction by different telescopes on key days, and a gallery of images that we hope to fill with content thanks to your collaboration.

We are especially interested in photographs that show the conjunction on different dates as both planets gradually get closer to each other until they end only 6 minutes apart on December 21 to progressively move away from then on. If you wish to send us your images, please send your photographs to Joaquin Alvaro <This email address is being protected from spambots. You need JavaScript enabled to view it.> along with your name. The images will be available on this website and if they are very numerous we will make a complete gallery and a gallery of selected images.

A cordial greeting.

Miguel Ángel López Valverde, Joaquín Álvaro y Ricardo Hueso Alonso (Sociedad Europlanet)
Blanca Troughton (Federación de Asociaciones Astronómicas de España)
Iñaki Ordóñez-Etxeberria (Sociedad Española de Astronomía)
Victoriano Canales Cerdá (Astronomers without Borders)
Ana Ulla (Sociedad Española de Astronomía)
Amelia Ortiz Gil (Nodo de divulgación de la Unión Astronómica Internacional)

What is a planetary conjunction?

A conjunction is an astronomical event that occurs when two stars have a very small apparent distance between them when they are observed from Earth. The conjunctions occur between the planets, the Moon and the Sun, because they are objects that gradually change their position in the sky, either by their own movement or by the movement of the Earth. Conjunctions are relatively frequent phenomena because all objects in the Solar System follow movements apparently along a line in the sky, the same for all, which we call "ecliptic." This is because all the planets and objects in the Solar System are approximately in one plane, as a consequence of their formation process, about 4,500 million years ago, when the nebula of dust and gas that gave us origin contracted by gravity. In the case of planetary conjunctions it is necessary that the Earth and the two planets that are part of the conjunction are aligned.

Does the fact that they look very close together in the sky mean that they also get closer to each other?

No. The approximation between objects in conjunction is a visual phenomenon and does not imply that both objects are close to each other. In this conjunction the physical distance between Jupiter and Saturn reached its minimum distance on October 12, 2020, with a separation of almost 730 million kilometers. However, the greatest visual proximity between the two planets will occur on December 21. This is because not only the movements of Jupiter and Saturn come into play, but also the translational movement of the Earth and its alignment with the other two planets.

When was this conjunction last seen, and when will it be seen again?

The conjunction between Jupiter and Saturn is periodic, and occurs approximately every 20 years. However, the last time there was a chance to see such a close conjunction between the two planets was in 1623. To see a conjunction at such a short distance again, we will have to wait until 2080.

- relative positions from December 15 to December 27 -

How can I observe the conjunction?

Jupiter and Saturn are bright planets that can be seen as bright stars without the need for optical instruments. The days leading up to December 21, the two planets can be observed with the naked eye in a very close position in the sky. On December 21 it will be convenient to use binoculars to distinguish them from each other. If you have a simple telescope, you will be able to distinguish, in addition to the planets, the rings of Saturn and the largest of the moons of both planets.

Where do I have to look?

The conjunction between Jupiter and Saturn will be visible at dusk with both objects at elevations of about 20 degrees above the horizon at the beginning of the night. Looking west, both planets can be seen as two very close bright stars or a single, very bright point. With binoculars, the distance between both objects will be observed well and some of their satellites can be seen.

And if it's cloudy, will I be able to see it before or after December 21?

Yes, the conjunction can be observed the days before and after, although the distance between Jupiter and Saturn will not be so small. In any case, if atmospheric conditions do not allow us to observe the conjunction from our location, we can resort to online observation of the event. For this, from this same page we will facilitate the transmission of the conjunction from different professional and amateur observatories.

I am Pisces, can this planetary alignment affect me in any way?

Yes. If you observe the conjunction with binoculars you will see how celestial mechanics works live, and you will see in detail this special and beautiful event that astronomy gives us. You will also observe that the firmament is already wonderful enough that it is totally unnecessary to invent or believe in unfounded astrological ideas. It also works if you are a Sagittarius.

- links of interest

• NAUKAS: "La gran conjunción del 21 de diciembre de 2020" - (por Manu Arregi)
• Desde el Tercer Planeta: "Una conjunción histórica" - (por Esteban Esteban)
• "Get ready for the 'Great Conjunction' of Jupiter and Saturn" - (space.com)
• "Before 2020 ends, a great conjunction of Jupiter and Saturn" - (earth sky.org)
• "Jupiter and Saturn in 2020: The Great Conjunction" - (por Jeffrey L. Hunt)
• "The 2020 Jupiter – Saturn great conjunction: online observation – 21 Dec. 2020" - (The Virtual Telescope Project 2.0)
• "Here’s when Jupiter and Saturn’s ‘Great Conjunction’ will happen this year" - (indianexpress.com)
• "How to View the Great Conjunction of Jupiter and Saturn" - Matthew R. Bate, University of Exeter, UK

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