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Hubble Space Telescope
GHRS Instrument Science Report 052

GHRS Instrument Science Report 052

"An Assessment of the Pipeline Wavelength Calibrations for the First Order
Gratings of the GHRS in Cycle 2"

David R. Soderblom, Lisa E. Sherbert, and Stephen J. Hulbert

Abstract excerpted from the report:

This Report is based on several executions of calibration proposal
4067 and shows that the default wavelength scaled provided by the 
pipeline data reduction system has not changed significantly with
time. WAVE exposures as part of user observations can, however, improve
the zero point for each observation, as can use of SPYBAL exposures.