5452 20211011094216.0 10.3389/fspas.2021.646895 DOI SCART-2021-0127 Kirichenko, Alexey KORTES Mission for Solar Activity Monitoring Onboard International Space Station 2021 We present a description of the recent advances in the development of the KORTES assembly—the first solar oriented mission designed for the Russian segment of the International Space Station. KORTES consists of several imaging and spectroscopic instruments collectively covering a wide spectral range extending from extreme ultraviolet (EUV) wavelengths to X-rays. The EUV telescopes inside KORTESwill trace the origin and dynamics of various solar phenomena, e.g., flares, CMEs, eruptions etc. EUV spectra provided by grazing-incidence spectroheliographs will enable precise DEM-diagnostics during these events. The monochromatic X-ray imager will observe the formation of hot plasma in active regions and outside them. The SolpeX module inside KORTES will offer an opportunity to measure fluxes, Doppler shifts and polarization of soft X-ray emission both in lines and continuum. SolpeX observations will contribute to studies of particle beams and chromospheric evaporation. The instrumentation of KORTES will employ a variety of novel multilayer and crystal optics. The deployment of KORTES is planned for 2024. NO solar corona solar flares polarimetry spectroscopy solar imaging extreme ultraviolet soft X-rays international space station Kuzin, Sergey Shestov, Sergey Ulyanov, Artem Pertsov, Andrey Bogachev, Sergey Reva, Anton Loboda, Ivan Vishnyakov, Eugene Dyatkov, Sergey Erkhova, Nataliya Stȩślicki, Marek Sylwester, Janusz Płocieniak, Stefan Podgórski, Piotr Kowaliński, Mirosław Bakała, Jarosław Szaforz, Żaneta Siarkowski, Marek Ścisłowski, Daniel Mrozek, Tomasz Sylwester, Barbara Malyshev, Ilya Pestov, Alexey Polkovnikov, Vladimir Toropov, Mikhail Salashchenko, Nikolay Tsybin, Nikolay Chkhalo, Nikolay Frontiers in Astronomy and Space Sciences 8 2021 April 1-11 sergei.shestov@observatoire.be https://www.frontiersin.org/articles/10.3389/fspas.2021.646895/full published in REFERD