Data Calibration and Analysis for He I 1083 nm Imaging Spectroscopy

Details Data Calibration and Analysis for He I 1083 nm Imaging Spectroscopy Data Calibration and Analysis for He I 1083 nm Imaging Spectroscopy

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003soph..218....1j&link_type=abstract

Solar Physics, v. 218, Issue 1, p. 1-16 (2003).

Physics

9

Scientific paper

Imaging spectroscopy in the Hei 1083 nm lines is a powerful tool for probing the top of the chromosphere and bottom of the transition region, but simple techniques for spectral calibration and analysis often fail for this line. A method for spectral flat-fielding using a uniform solar exposure with spectral lines in place is presented and illustrated with 1083 nm data obtained at the National Solar Observatory (NSO) Kitt Peak Vacuum Telescope with the NASA/NSO Spectromagnetograph. An efficient method for analysis of the data producing images in continuum intensity, line-of-sight velocity, equivalent width, central line depth, Doppler width, and line asymmetry is also presented and illustrated.

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