Data inversion for the Multi‐Order Solar Extreme‐Ultraviolet Spectrograph

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2003-11-05

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The Multi­-Order Solar Extreme Ultraviolet Spectrograph (MOSES) is a high resolution, slitless imaging spectrometer that will observe the Sun in extreme ultraviolet near 304A. MOSES will fly on a NASA sounding rocket launch in spring 2004. The instrument records spatial and spectral information into images at three spectral orders. To recover the source spectrum, an ill­posed inversion must be performed on these data. We will explore two of the techniques by which this may be accomplished: Fourier backprojection and Pixons, constrained by the spatially integrated spectrum of the Sun. Both methods produce good results, including doppler shifts measured to 1/3­pixel accuracy. The Pixon code better reproduces the line widths.

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Fox, J. Lewis, Charles C. Kankelborg, and Tomas R. Metcalf. “Data Inversion for the Multi-Order Solar Extreme-Ultraviolet Spectrograph.” Edited by Allen M. Larar, Joseph A. Shaw, and Zhaobo Sun. Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research V (November 5, 2003). doi:10.1117/12.512032.
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