Groundbreaking Ceremony Marks the Beginning  of CTAO-South Array Construction in Chile 

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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

LST Collaboration Paper Provides New Clues About Gamma-Ray Burst Jets

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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

The CTAO Becomes a European Research Infrastructure Consortium

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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

New Hub for High-Energy Astrophysics – CTAO Science Data Management Centre Opens at DESY in Zeuthen

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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.

CTAO Science Data Management Centre Inauguration on 14 October 2024, Zeuthen (Germany)

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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.

The CTAO Enters a New Phase of Growth

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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

The CTAO Will Double its Staff as Major Infrastructure Development Begins In 2024

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On 6 September 2023, the CTAO’s two governing bodies, the Board of Governmental Representatives (BGR) and the CTAO gGmbH Council, gathered to agree on the significant forthcoming measures to advance the Observatory to its construction phase. During the meeting, both bodies unanimously certified their commitment to the progress of the CTAO, including a foreseen endorsement of up to approximately 30 million euro for 2024. This represents a significant increase in annual funding, which will enable the Observatory to not only move forward with substantial infrastructure development but also to double its workforce.

Stuart McMuldroch, Designated Director General for the future CTAO ERIC, Joins the Management Board of the CTAO gGmbH

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Dr. Stuart McMuldroch has been appointed as the second Managing Director of the Management Board of the CTAO gGmbH, starting from 30 April 2023, alongside the Observatory’s existing Director, Prof. Federico Ferrini. McMuldroch and Ferrini will work together on the final steps of the Observatory’s legal entity transition towards the ERIC. McMuldroch was recently selected as the first Director General of the CTAO ERIC by the Board of Governmental Representatives (BGR), a position he will officially assume when the ERIC is established in mid-2023.