FOS Instrument Science Report # 105
"PRE-COSTAR FOS APERTURE THROUGHPUTS FROM MODELS"
by I. N. Evans

Abstract excerpted from the report:
	Monochromotic pre-COSTAR aperture throughputs for the FOS have been
	computed at every 220A in wavelength from model point spread functions.
	Model absolute aperture throughputs and aperture throughput ratios
	relative to the 4.3 aperture are presented.  The model aperture 
	throughput ratios agree with the observed values on the red side, but
	inreasingly disagree with the observed values for the smaller blue 
	side apertures.  This may be due to target mis-centering when the blue
	side observational data were obtained.


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