Computer Science
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990hst..prop.1380b&link_type=abstract
HST Proposal ID #1380
Computer Science
Hst Proposal Id #1380
Scientific paper
This proposal defines the procedure for mapping in deflection space the projected aperture locations on the cathode faceplates of each of the four (4) IDTs on the HSP. In addition, the focus of each of the IDTs will be tested by commanding the sample beam to step across the edge of the finding aperture. The aperture mapping will be accomplished using the bright earth to illuminate the aperture plate for each IDT; an IDT area scan of several apertures will be made. These data will be compared with the deflection coordinates determined from ground based testing in order to map out any systematic offsets or stretching of the projected aperture pattern as a function of the combined ST/HSP operating environment. Three orbits will be allowed before the bulk of the test is done in order for the HSP temperature to stabilize. During these three orbits, additional scans of the VIS IDT will be done to monitor the behavior of the aperture pattern as the HSP temperature stabilizes. Note: This is RPSS file 1380. Revision history: Richards 4/13/88, Slovak 5/20/88, Richards 6/29/88 Translated to V2 instructions, Richards 1/12/89 Errors corrected, Richards 2/14/89
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