Spectral calibration of filters and detectors of solar telescope at a wavelength of 13.2 nm for the TESIS project |
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Authors: | S. V. Kuzin S. V. Shestov A. A. Pertsov A. A. Reva S. Yu. Zuev A. Ya. Lopatin V. I. Luchin H. Zhou T. Huo |
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Affiliation: | (1) Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991, Russia;(2) Institute for Physics of Microstructures, Russian Academy of Sciences, ul. Ul’yanova 46, Nizhni Novgorod, 603950, Russia;(3) National Synchrotron Radiation Laboratory, Hefei, Anhui 230029, Peoples Republic of China, USA |
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Abstract: | The telescope at a wavelength of 13.2 nm of the TESIS device of the CORONAS-PHOTON satellite is intended for imaging hot plasma (T ~ 10 MK) of the solar corona. In this paper, calibration of optical elements of the telescope is described. The transmittance of multilayer Zr/Si filters and the sensitivity and radiation resistance of the CCD-array-based detector were measured. The transmittance of filters in the operating wavelength range was 40–50% (for filters of various thicknesses); the spectral dependence of the transmittance was close to the calculated one. The transmittance of filters in the visible region was (1–2) × 10?6. The detector sensitivity was 0.01–0.1 analog-to-digital units per photon (adu/photon), the radiation resistance was better than 109 rad. |
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