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Persistent URL http://purl.org/net/epubs/work/29637
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Record Id 29637
Title The Laboratory Calibration of the SOHO Coronal Diagnostic Spectrometer
Abstract The laboratory end-to-end testing of the coronal diagnostic spectrometer (CDS) experiment on the ESA/NASA SOHO mission is reported. A brief overview of CDS, which operates in the extreme ultraviolet wavelength range, is given. Pertinent details of the calibration source are presented, followed by an account of the source beam characterisation. A section is devoted to the determination of the instrument apertures and this includes an outline of the measurements, the results from both the grazing incidence aperture scans and their interpretation to yield estimated aperture areas. Next the measurement of spectrometer bandwidths and their comparison with expected values are described. Then the pre-launch wavelength calibrations are obtained. The section on sensitivity starts with an evaluation of the effects of polarisation on the measurements. The expected sensitivities are then derived. The measurements, their analysis and a comparison of measured and expected sensitivities are presented for the normal incidence and grazing incidence spectrometers. The application of the laboratory calibration to in-flight solar data is discussed.
Organisation CCLRC
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Language English (EN)
Type Details URI(s) Local file(s) Year
Report RAL Technical Reports RAL-TR-1999-036. 1999. RAL-TR-1999-036.pdf 1999