The Lund Observatory method for IUE spectral image processing

Details The Lund Observatory method for IUE spectral image processing The Lund Observatory method for IUE spectral image processing

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.281b.345l&link_type=abstract

In ESA, Proceedings of the Celebratory Symposium on a Decade of UV Astronomy with the IUE Satellite, Volume 2 p 345-348 (SEE N89

Astronomy and Astrophysics

Astronomy

3

Image Processing, Iue, Satellite Imagery, Spaceborne Astronomy, Ultraviolet Astronomy, Ultraviolet Spectra, Calibrating, Data Reduction, Spectrophotometry

Scientific paper

A method for IUE data processing and spectrum extraction is described. The geometric transformation of the raw image is made by identifying fixed patterns in the background outside spectral orders. By correlating these with patterns in the flat-field calibration exposures, geometric correction to within a fraction of one pixel appears possible. The photometric calibration thus avoids the pixel-to-pixel fixed-pattern noise ordinarily present, and the subsequent spectrum extraction may give spectra with significantly lower noise than ordinary reduction methods.

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