The first Large-Sized Telescope (LST) prototype of the Cherenkov Telescope Array Observatory (CTAO), located at the Roque de los Muchachos Observatory (Garafía, La Palma), has made its first scientific discovery by detecting the source OP 313 above 100 gigaelectronvolts (GeV), a level of energy a billion times higher than the visible light that humans can perceive. It is the most distant quasar ever observed by gamma-ray instruments from the ground. On 15 December, the Large-Sized Telescope (LST) Collaboration announced through an Astronomer’s Telegram (ATel) the detection of the source OP

Researchers at the Instituto de Astrofísica de Canarias (IAC) and the University of La Laguna (ULL), publish today in the journal Astronomy & Astrophysics the first results of a detailed study of nearly a thousand blue supergiants in the Milky Way. This is the biggest sample of stars of this type which has been studied until now. The study has used over 15 years of high quality observations taken mainly with the NOT and Mercator telescopes at the Roque de los Muchachos Observatory in La Palma. The analysis of these data will allow researchers to improve their knowledge of the evolution of

The Deputy Director of the IAC, Casiana Muñoz Tuñón praises the bravery and persistence shown by Francisco Sánchez which enabled the IAC to be recognized as one of the best centres in the world for research in astrophysics. The Instituto de Astrofísica de Canarias (IAC) hosted this morning the ceremony to rename the Centre of Astrophysics on La Palma (CALP) as CALP Francisco Sánchez, in honour of the person who was the first Professor of astrophysics in Spain, and the founder of the IAC. Those taking part in the ceremony included the Founding Director of the IAC, Francisco Sánchez Martínez