SPACE	INSTRLMENT SCIENCE REPORT
	TELESCOPE
	SCJENCE
INSTFFUTE
AN AUTOMATED METHOD FOR COMPTJTING XBSOLUTE INSTRUMENTAL SENSITIVITY TITLE; CURVES FOR FOS: RESULTS OF TESTING WITH IUE SPECTRA
	0.	Lindlar and R. Bohlin	August 1986



A method for cornputing inverse sensitivity curves for the Faint
Object Spectrograph (FOS) is investigated by deriving the calibration
of the International Ultraviolet Explorer (IUE). The rnethod involves
a progressive polynomial fitting technique, which will generate a
smooth sensitivity curve from the raw ratio ot the flux in the
standard star spectrurn to the counts per sec in the observed
spectrum. The t1smoothness“ of the Eitted curves are eornparable to
the present IUE sensitivity curves, which were created by manually
drawing a curve through the raw data.