![The Calar Alto Observatory opens up its doors to the public | Instituto de Astrofísica de Andalucía - CSIC The Calar Alto Observatory opens up its doors to the public | Instituto de Astrofísica de Andalucía - CSIC](https://www.iaa.csic.es/sites/default/files/covers/news/caha_0.jpg)
The Calar Alto Observatory opens up its doors to the public | Instituto de Astrofísica de Andalucía - CSIC
![University of Almería, Calar Alto Observatory and IAA will enhance astronomical knowledge | Instituto de Astrofísica de Andalucía - CSIC University of Almería, Calar Alto Observatory and IAA will enhance astronomical knowledge | Instituto de Astrofísica de Andalucía - CSIC](https://www.iaa.csic.es/sites/default/files/covers/news/interior_sup.png)
University of Almería, Calar Alto Observatory and IAA will enhance astronomical knowledge | Instituto de Astrofísica de Andalucía - CSIC
![Telescope Astrological Observatory, Calar Alto, Spain Stock Photo, Picture And Royalty Free Image. Image 66033537. Telescope Astrological Observatory, Calar Alto, Spain Stock Photo, Picture And Royalty Free Image. Image 66033537.](https://previews.123rf.com/images/pacomr/pacomr1609/pacomr160900006/66033537-telescope-astrological-observatory-calar-alto-spain.jpg)
Telescope Astrological Observatory, Calar Alto, Spain Stock Photo, Picture And Royalty Free Image. Image 66033537.
A large telescope on top of a hill under a night sky filled with stars photo – Free Grey Image on Unsplash
![Public surveys and new instrumentation for Calar Alto Observatory | Instituto de Astrofísica de Andalucía - CSIC Public surveys and new instrumentation for Calar Alto Observatory | Instituto de Astrofísica de Andalucía - CSIC](https://www.iaa.csic.es/sites/default/files/covers/congress/calar15_0.jpg)
Public surveys and new instrumentation for Calar Alto Observatory | Instituto de Astrofísica de Andalucía - CSIC
![The astronomical observatory Calar Alto de Almería will use biomass to reduce its ecological footprint and save 33.000 euros a year by eliminating diesel | Expobiomasa The astronomical observatory Calar Alto de Almería will use biomass to reduce its ecological footprint and save 33.000 euros a year by eliminating diesel | Expobiomasa](http://expobiomasa.com/sites/default/files/2020-03/observatorioCalarAlto.jpg)
The astronomical observatory Calar Alto de Almería will use biomass to reduce its ecological footprint and save 33.000 euros a year by eliminating diesel | Expobiomasa
![The UAL will contribute to the development of TARSIS, the next generation instrument for the Calar Alto 3.5 metre telescope | CDE Almería - Centro de Documentación Europea - Universidad de Almería The UAL will contribute to the development of TARSIS, the next generation instrument for the Calar Alto 3.5 metre telescope | CDE Almería - Centro de Documentación Europea - Universidad de Almería](https://www.cde.ual.es/wp-content/uploads/2022/05/FOTO-MAYO-27-2022-UAL-TELESCOPIO-TARSIS-696x463-1.jpg)