Posted by Daniele Calchetti | January 14, 2026 | General news

The SO/PHI team is glad to announce the fifth release of the SO/PHI-HRT L2 dataset acquired in the Spring of 2025 during the Remote Sensing Windows (RSW) 19, 20, and 21 (version 2, no version 1 released before) and in the whole 2023 during RSWs 7, 8, 9, 10, 11, and 12 (version 2) of Solar Orbiter’s mission.

The L2 data consists of the full Stokes vector and results of the RTE inversion. Data can be downloaded from the Solar Orbiter Archive (SOAR,  http://soar.esac.esa.int/soar/), and essential information about the content of this release is provided here (see PHI section).

SO/PHI-HRT scientific data were taken in a period covering 11 March to 25 April 2025, 22 March to 17 April and 6 October to 1 November 2023, i.e. during the first out-of-ecliptic perihelion passage in 2025 and the two perihelion passages by Solar Orbiter during 2023. The first four data releases, already available on SOAR, included the SO/PH-HRT L2 dataset of RSW 1 to 18 (version 1).

An overview of the released data, including quicklook thumbnails and information about the quality of each released data set, is available here. We suggest consulting that website before using the data set for scientific applications.

Additional information about the scientific data can be found on the SO/PHI webpage www.mps.mpg.de/solar-physics/solar-orbiter-phi. If you need any help or if you have any special requests, please contact the PHI team at [email protected]. We would also be grateful for any feedback about problems or issues encountered in using SO/PHI data.