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1 October 1991 Multilayer mirrors and filters for imaging the earth's inner magnetosphere
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Remote sensing of resonantly scattered 304 angstrom sunlight by He+ in the earth's plasmasphere would provide a structural map of the plasmasphere. The primary concern for such an imaging system is the extraction of the 304 angstrom signal out of a background of other wavelengths of much higher intensities. The capability of multilayer mirrors and thin film filters for this task are analyzed and some guidelines for the design of these optical elements for space imaging applications are presented. Analysis shows that multilayer mirrors require the use of a filter to remove longer wavelength background emissions and they do not provide uniform reflectance over the desired 30 deg field of view. An effective and simpler alternative for this application may be a Si coated Te transmission filter without multilayer mirrors.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dean W. Schulze, Bill R. Sandel, and A. Lyle Broadfoot "Multilayer mirrors and filters for imaging the earth's inner magnetosphere", Proc. SPIE 1549, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy II, (1 October 1991);


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