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Improving IUE High Dispersion ExtractionWe 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 (SI HI) 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 sign ificantly better than the NEWSIPS products. This work has been supported by NASA ADP grants.
Document ID
Document Type
Conference Paper
Lawton, Patricia J.
(ADNET Systems, Inc. Potomac, MD, United States)
VanSteenberg, M. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Massa, D.
(SGT, Inc. Greenbelt , MD, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2007
Subject Category
Distribution Limits

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