FOS PROJECT DATA BASE APERTURE FILES


CAL/FOS-063


A.L. Kinney and C.R. Cox
October, 1989


ABSTRACT


The Project Data Base (PDB) science instrument aperture files (SIAF)
contain all information necessary for placing a. target of knowri
position into the F0S apertures and for offsetting between different
FOS apertures in a Mode 1, real-time FOS taxget acquisition. We
describe here the coordinate systems defiried by the PDB and show
where the coefficients for tbose coordinate systems are stored. We
derive the contents of the PDB by sta.rting from the blue side
aperture positions measured at GSFC, and we summarize the sequence of
rneasurements in 0V and SV that will be used to update the PDB SIAF. A
flow diagra.m is given in the Appendix for the path from measured
parameters to PDB SIAF values.