La Palma, Spain, 15 October 2026 – Two hundred and fifty scientists and representatives from leading research institutions around the world celebrated the inauguration of the Large-Sized Telescope (LST) sub-array at the CTAO-North site at the Roque de los Muchachos Observatory in La Palma, Spain. The completion of the four telescopes marks a significant milestone … Continued
La Palma, Spain — On 15 August, the CTAO LST Collaboration and the MAGIC Collaboration released remarkable findings from observations of OP 313, the most distant very high-energy blazar ever recorded. The paper, published in the journal Astronomy & Astrophysics, presents in-depth observations conducted with the prototype Large-Sized Telescope (LST-1) and the MAGIC telescopes at … Continued
Bologna, Italy — On 20 July, the Netherlands officially joined the CTAO ERIC as an Observer. The admission, which was unanimously approved by the CTAO ERIC Council, reinforces the strong, long-standing partnership between the Dutch scientific community and the Observatory. With the addition of the Netherlands, the CTAO ERIC is now supported by a growing international coalition comprising 11 countries and one intergovernmental organisation. Under … Continued
(Versión en español abajo) On Saturday, 16 May 2026, at 11:00 am, the Teatro Chico (C. Díaz Pimienta 1, Santa Cruz de La Palma) will host the sixth edition of “Women of CTAO,” an outreach event that focuses on the women who are making possible one of the most ambitious scientific projects on the planet: … Continued
Paranal, Chile, 17 December 2025 — Representatives from the Cherenkov Telescope Array Observatory (CTAO), the European Southern Observatory (ESO), and governmental authorities gathered today to celebrate the official groundbreaking of the CTAO’s southern site, CTAO-South. After years of successful site preparations, the event marked the beginning of construction on the telescope foundations, paving the way for … Continued
La Palma, Spain — The international CTAO LST Collaboration released remarkable findings from observations of GRB 221009A—the brightest gamma-ray burst (GRB) ever recorded. The results were published on 23 July by the renowned journal The Astrophysical Journal Letters (ApJ Letters). The publication presents in-depth observations conducted in 2022 with the Large-Sized Telescope (LST) prototype, the … Continued
Bologna, Italy, 7 January 2025 – On January 7, 2025, the European Commission established the Cherenkov Telescope Array Observatory (CTAO) as a European Research Infrastructure Consortium (ERIC), furthering its mission to become the world’s largest and most powerful observatory for gamma-ray astronomy. The creation of the CTAO ERIC will enable the Observatory’s construction to advance … Continued
On September 23, the CTAO ACADA Collaboration achieved yet another milestone when the CTAO Central Organisation officially approved and closed out the Critical Design Review (CDR) of the Array Control and Data Acquisition (ACADA) system. The approval of the CDR, an in-depth evaluation to ensure the system design meets all the requirements of the Observatory, marks a new phase in the project, moving from testing to integrating the advanced software packages that will operate the arrays.
On September 23, the CTAO ACADA Collaboration achieved yet another milestone when the CTAO Central Organisation officially approved and closed out the Critical Design Review (CDR) of the Array Control and Data Acquisition (ACADA) system. The approval of the CDR, an in-depth evaluation to ensure the system design meets all the requirements of the Observatory, marks a new phase in the project, moving from testing to integrating the advanced software packages that will operate the arrays.
Bologna, Italy – On Thursday, 18 April, during the closing session of the CTAO Science Symposium at Teatro Duse in Bologna, the Managing Director of the CTAO, Dr. Stuart McMuldroch, officially announced the Observatory’s new phase of growth. Supported by the 30M Euro endorsement by the CTAO’s governing bodies in September 2023, this new period … Continued