Abstract
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 KORTES will 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.
Highlights
The KOronal X-Ray TElescope and Spectrometer (KORTES) is the first solar mission designed for the Russian segment of the International Space Station (ISS)
The scientific instrumentation of KORTES consists of several imagers and spectrometers providing the multi-channel observations of the solar atmosphere, crucial for solar activity monitoring
All authors listed have made a substantial, direct and intellectual contribution to the work, and approved it for publication
Summary
The KOronal X-Ray TElescope and Spectrometer (KORTES) is the first solar mission designed for the Russian segment of the International Space Station (ISS). KORTES is a conceptual successor of the previous XRAS projects—SPIRIT (SPectrohelIogRaphIc Telescope) and TESIS (TelEScope and Imaging Spectrometer) launched within the Russian CORONAS program (Complex ORbital Observations of Near-Earth Activity of the Sun). Similar to these projects KORTES represents a multichannel assembly of telescopes and spectrometers to cover a wide range of wavelengths—from hard X-rays (0.44 Å) to extreme ultraviolet (584 Å). In the following the design of the separate KORTES instruments is described in more details
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