Experiment TESIS on board Coronas-Photon
S. V. Kuzin, S. A. Bogachev, I. A. Zhitnik, A. A. Pertsov, A. P. Ignatiev, A. M. Mitrofanov, V. A. Slemzin, S. V. Shestov, N. K. Sukhodrev,
P.N. Lebedev Physical Institute of Russian Academy of Science, Leninskij prospekt 53, Moscow 119991, Russia
O.I. Bugaenko
Astronomical Institute, Moscow State University, Universitetskij prospekt 13, Moscow 119992, Russia
We report instrument capabilities and scientific goals of the TESIS experiment on board the satellite Coronas-Photon., which is planned for launching at the first half of 2008. The primary objective of the TESIS is to understand mechanisms of energy accumulation and release in the solar atmosphere through complex multiwavelengths observations of solar active phenomena with high spatial, spectral and temporal resolution. In the EUV and Soft X-ray spectral bands, TESIS will provide simultaneous imaging of the Sun with five instruments: the MgXII Imaging Spectroheliometer (MISH) for monochromatic observations of the full Sun in the MgXII 8.42 A line; EUV Spectoheliometer (EUSH) for registration of solar spectra in the band 280-330 A; two Full-disk EUV Telescopes (FET) with multilayer mirrors covering the band 130-136 A and 290-320 A and Solar EUV Coronagraph (SEC) for observations the inner and outer solar corona from 0.2 to 4 solar radiuses in spectral band 290-320 A. The design of the instrument and scientific program of observations are discussed.