Fringe correction for STIS near-IR long-slit spectra using contemporaneous tungsten flat fields

Details Fringe correction for STIS near-IR long-slit spectra using contemporaneous tungsten flat fields Fringe correction for STIS near-IR long-slit spectra using contemporaneous tungsten flat fields

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hstc.work..100g&link_type=abstract

The 1997 HST Calibration Workshop with a New Generation of Instruments, p. 100

Physics

3

Near Infrared Radiation, Point Sources, Infrared Spectra, Hubble Space Telescope, Slits, Diffraction Patterns, Image Analysis, Pattern Recognition, Jupiter (Planet), Tungsten, Io, Gray Scale

Scientific paper

We report on the accuracy of fringe removal for Space Telescope Imaging Spectrograph (STIS) long-slit near-IR spectra using contemporaneous flats (taken during the course of science data collection). In case of point sources, we use tungsten flats taken through a small slit to mimic illumination by a point source. In case of extended sources, we use long-slit spectra of Jupiter's moon Io as test cases. We find that in case of the G750L grating, fringe residuals can be reduced to below the 1% level, for both point sources and extended objects.

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