GHRS Instrument Science Report 075 "Summary of the GHRS Calibration Program During Cycle 4" Alfred B. Schultz, David R. Soderblom, Anne Gonnella, Stephen J. Hulbert, Claus Leitherer, Lisa E. Sherbert, and Joseph Skapik May 30, 1996 Abstract A summary of the calibration and performance of the GHRS in Cycle 4 is presented. The GHRS is fully characterized except for three areas that will be covered during Cycle 5: the sensitivity and vignetting for grating G140M; wavelength offsets between the Large Science Aperture and Small Science Aperture; and the photocathode granularity when using the G140L grating. All Cycle 4 calibration programs have now been completed, and as necessary, calibration tables and reference images have been updated.
