Ironing Out the Wrinkles in STIS

Details Ironing Out the Wrinkles in STIS Ironing Out the Wrinkles in STIS

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hstc.worke...7a&link_type=abstract

"2010 Space Telescope Science Institute Calibration Workshop - Hubble after SM4. Preparing JWST, held 21-23 July 2010 at Space T

Physics

Scientific paper

The echelle wavelength scales of Space Telescope Imaging Spectrograph were evaluated based on a novel high-density line list for the on-board Pt/Cr-Ne emission lamps. The new reference wavelengths were obtained by a bootstrapping technique that exploited the space-borne instrument as its own laboratory spectrometer.
A number of strategies were explored to mitigate subtle wavelength scale deviations identified in the process (known from earlier work), either by modifying the pipeline dispersion relations directly, or by a post-facto distortion correction. The main conclusion is that the STIS echelle wavelengths can be significantly improved with only modest changes to the current dispersion model.

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