Observations with the LST-1 and MAGIC telescopes have provided the most detailed study yet of OP 313, the most distant blazar ever detected at very high gamma-ray energies. The result follows its first very-high-energy detection by LST-1 in 2023, an effort in which the IFAE Gamma-ray Group was already involved. IFAE contributes to LST-1 and MAGIC through instrumentation, operation and data-analysis software.
