Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.7608l&link_type=abstract
American Astronomical Society Meeting 210, #76.08; Bulletin of the American Astronomical Society, Vol. 39, p.183
Astronomy and Astrophysics
Astronomy
Scientific paper
We present a different method to extract high dispersion International Ultraviolet Explorer (IUE) spectra from the New Spectral Image Processing System (NEWSIPS) geometrically and photometrically corrected (SIHI) images of the echellogram. The new algorithm corrects many of the deficiencies that exist in the NEWSIPS high dispersion (SIHI) spectra. Specifically, it does a much better job of accounting for the overlap of the higher echelle orders, it eliminates a significant time dependency in the extracted spectra (which can be traced to the background model used in the NEWSIPS extractions), and it can extract spectra from echellogram images that are more highly distorted than the NEWSIPS extraction routines can handle. Together, these improvements yield a set of IUE high dispersion spectra whose scientific integrity is significantly better than the NEWSIPS products. This work has been supported by NASA ADP grants.
Lawton Patricia J.
Massa Derck
van Steenberg Michael E.
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