RT Book, Section T1 Ultraviolet observations of massive stars and the instrumentation to come A1 Gómez De Castro, Ana Inés A2 Landt, Hermine A2 Dominik, Martin A2 Oliver, Carol AB The wealth of information obtained about massive stars from observations at ultraviolet (UV) wavelengths has been fundamental to understand their structure and the mechanisms regulating their evolution. There are however, important aspects that have not yet been addressed due to the lack of data and the relevant instrumentation such as the role of binarity and magnetic fields or the impact of low metallicity in the evolution of massive stars. There are plans to develop UV spectropolarimeters, UV monitors and very efficient telescopes with high collecting surfaces that will revolutionize the field. In this contribution, a short update on the current and foreseen UV instrumentation is provided. PB Cambridge University Press SN 1743-9213 SN 1743-9221 YR 2022 FD 2022 LK https://hdl.handle.net/20.500.14352/132695 UL https://hdl.handle.net/20.500.14352/132695 LA eng NO de Castro, A. I. G. (2022). Ultraviolet observations of massive stars and the instrumentation to come. Proceedings of the International Astronomical Union. 2022 Aug 29; 18(S361): 621-629. NO Acuerdos transformativos CRUE 2025Symposium S361: Massive Stars Near and Far. IAU Symposium 387, 15-19 April 2024, Durham, United Kingdom NO Ministerio de Ciencia e Innovación DS Docta Complutense RD 19 mar 2026