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1International Institute for Earthquake Prediction Theory and Mathematical Geophysics, Russian Ac. Sci., Warshavskoe sh., 79, korp. 2, Moscow, 113556, Russia 2Institute of Geophysics and Planetary Physics, University of California, Los Angeles, California, 90095-1567, U.S.A. 3Department of Earth and Space Sciences, University of California, Los Angeles,(More)
Al, with a passband in the wavelength range of 17-60 nm, and Zr, with a passband in the wavelength range of 6.5-17 nm, thin films on a support grid or support membrane are frequently used as UV, visible, and near-IR blocking filters in solar observatories. Although they possess acceptable optical performance, these filters also have some shortcomings such(More)
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