RT Book, Section T1 Open high-level data formats and software for gamma-ray astronomy A1 Hassan, Tarek A1 Rosado Vélez, Jaime A1 Contreras González, José Luis AB In gamma-ray astronomy, a variety of data formats and proprietary software have been traditionally used, often developed for one specific mission or experiment. Especially for ground-based imaging atmospheric Cherenkov telescopes (IACTs), data and software are mostly private to the collaborations operating the telescopes. However, there is a general movement in science towards the use of open data and software. In addition, the next-generation IACT instrument, the Cherenkov Telescope Array (CTA), will be operated as an open observatory. We have created a Github organisation at https://github.com/open- gamma-ray- astro where we are developing high-level data format specifications. A public mailing list was set up at https://lists.nasa.gov/mailman/listinfo/open-gamma- ray-astro and a first face-to-face meeting on the IACT high-level data model and formats took place in April 2016 in Meudon (France). This open multi-mission effort will help to accelerate the development of open data formats and open-source software for gamma-ray astronomy, leading to synergies in the development of analysis codes and eventually better scientific results (reproducible, multi-mission). This write-up presents this effort for the first time, explaining the motivation and context, the available resources and process we use, as well as the status and planned next steps for the data format specifications. We hope that it will stimulate feedback and future contributions from the gamma-ray astronomy community. PB American Institut of Physics SN 978-0-7354-1456-3 YR 2017 FD 2017 LK https://hdl.handle.net/20.500.14352/19451 UL https://hdl.handle.net/20.500.14352/19451 LA eng NO Artículo firmado por más de 10 autoresInternational Meeting on High Energy Gamma-Ray Astronomy (6th.2016.Heidelberg, Alemania)We would like to thank everyone that has contributed to or supported this effort, be it directly via contributions to the format specification, or indirectly via feedback or adopting the existing formats, spending the effort to transform their existing data to the common formats defined here, or by giving people time or travel money to work on this.We would also like to thank the following services: NASA for hosting the open-gamma-ray-astro mailing list,Github for making this way of online collaboration possible, Sphinx as documentation system and Read the docsfor building and hosting the HTML and PDF version of the specification. DS Docta Complutense RD 7 abr 2025