Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pasj...59s.865b&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.59, No.SP3, pp.S865--S869
Astronomy and Astrophysics
Astronomy
18
Sun, Sun: Uv Radiation
Scientific paper
A wavelength calibration of solar lines observed by the high resolution EUV Imaging Spectrometer (EIS) on the Hinode satellite is reported. Spectral features of the quiet sun and of two mildly active areas were measured and calibrated. A listing of the stronger observed lines with identification of the leading contributor ions is presented. 41 lines are reported, with 90% identified. Wavelength precisions (2σ) of ±0.0031Å for the EIS short band and ±0.0029Å for the EIS long band are obtained. These lines, typical of 1-2 ×106 K plasmas, are recommended as standards for the establishment of EIS wavelength scales. The temperature of EIS varies by about 1D.5 C around the orbit and also with spacecraft pointing. The correlation of these temperature changes with wavelength versus pixel number scale changes is reported.
Brown Charles M.
Culhane Len
Davila Joseph M.
Dere Kenneth P.
Doschek George A.
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