The design and calibration of thin-film Zr transmission filters for the Cosmic Hot Interstellar Plasma Spectrometer (CHIPS) spaceborne astronomical telescope is presented. The transmission of a 1000-Åthick Zr filter is measured for wavelengths from 45 to 1304 Å as well as its variability with respect to expected space-flight environmental extremes of temperature, vibration, and atomic O bombardment. For the CHIPS spectral band of 90–260 Å, the transmission of the Zr filter is deemed useful between 90 and 200 Å and is stable with respect to expected temperature and vibrational changes. The maximum atomic O bombardment decreases the filter transmission between 90 and 130 Å by 20% and does not appreciably affect the rest of the CHIPS bandpass. These results make Zr an acceptable filter candidate for CHIPS. © 2002 Optical Society of America.
Extreme-ultraviolet calibration of thin-film zr filters for the cosmic hot interstellar plasma spectrometer
Pelizzo M. G.;
2002
Abstract
The design and calibration of thin-film Zr transmission filters for the Cosmic Hot Interstellar Plasma Spectrometer (CHIPS) spaceborne astronomical telescope is presented. The transmission of a 1000-Åthick Zr filter is measured for wavelengths from 45 to 1304 Å as well as its variability with respect to expected space-flight environmental extremes of temperature, vibration, and atomic O bombardment. For the CHIPS spectral band of 90–260 Å, the transmission of the Zr filter is deemed useful between 90 and 200 Å and is stable with respect to expected temperature and vibrational changes. The maximum atomic O bombardment decreases the filter transmission between 90 and 130 Å by 20% and does not appreciably affect the rest of the CHIPS bandpass. These results make Zr an acceptable filter candidate for CHIPS. © 2002 Optical Society of America.Pubblicazioni consigliate
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