GHRS Gimp - 4

Details GHRS Gimp - 4 GHRS Gimp - 4

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5551h&link_type=abstract

HST Proposal ID #5551

Physics

Hst Proposal Id #5551

Scientific paper

Measurements of the image drift due to the geomagnetic field will be made on the GHRS D2 detector. Maps of the spectral cal lamp image made at approximately 1 minute intervals will be used to determine the amount of motion in both X and Y directions. Spectra obtained with the onboard calibration lamps in RAPID readout mode will permit determination of the uniformity of the image drift across the diode array and an accurate sensitivity and phase measurement. The latter data will also be used to determine how well the effect can be corrected and if second order effects (hysteresis, local field distortion due to permeable materials in the vicinity of the Digicons, influence of the S/C magnetic torquers) are substantial.

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