Comparison of solar spectra from the Hinode extreme-ultraviolet imaging spectrometer (EIS) to preflight calibrations

John Seely; Uri Feldman; Charles Brown; George Doschek; H. Hara

doi:10.1117/12.734592

20 September 2007 Comparison of solar spectra from the Hinode extreme-ultraviolet imaging spectrometer (EIS) to preflight calibrations

John Seely, Uri Feldman, Charles Brown, George Doschek, H. Hara

Author Affiliations +

Proceedings Volume 6688, Optics for EUV, X-Ray, and Gamma-Ray Astronomy III; 66880W (2007) https://doi.org/10.1117/12.734592
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

The Extreme-Ultraviolet Imaging Spectrometer (EIS) on the Hinode satellite records high-resolution solar spectra in the 170-210 Å and 246-290 Å wavelength ranges. The EIS optics operate at near normal incidence and consist of an off-axis parabolic mirror, a toroidal diffraction grating, two CCD detectors, and two thin aluminum filters. To increase the normal incidence efficiency, high-reflectance multilayer interference coatings were deposited on the mirror and the grating. Prior to launch, each of the optical components was calibrated using synchrotron radiation, and the spectral and spatial resolution of the complete instrument were measured. In this paper, we compare the preflight calibrations with the first-light spectra recorded in space.

Citation Download Citation

John Seely, Uri Feldman, Charles Brown, George Doschek, and H. Hara "Comparison of solar spectra from the Hinode extreme-ultraviolet imaging spectrometer (EIS) to preflight calibrations", Proc. SPIE 6688, Optics for EUV, X-Ray, and Gamma-Ray Astronomy III, 66880W (20 September 2007); https://doi.org/10.1117/12.734592

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