GHRS Instrument Handbook
The following paragraphs summarize calibrations for the GHRS as of May, 1995. Some items are not applicable to a particular mode ("N/A") and some are to be measured in Cycle 5 ("TBD").
Paired-pulse correction, diode response, and photocathode blemishes have been determined for both detectors. Photocathode response (flat fields) will not be measured, except for G140L (in Cycle 5).
Scattered light and blaze functions have been determined for both Ech-A and Ech-B.
Line and sample mapping have been done for both detectors and thermal constants have been determined for all the gratings, as have global wavelength coefficients. Incidence angle corrections are available for G160M, G200M, and G270M, but are TBD for the remaining gratings.