SCATTERED LIGHT From BRIGHT EMISSION LINES Prelirninary Version
Calibration Plan 12B

M. SIRK and R. BOHLIN
SPACE TELESCOPE SCIENCE INSTITUTE

Instrument Science Report CAL/FOS015 MARCH, 1985



Abstract


Scattered light levels are obtained by observing emission lines. At a
distance of 50 diodes from the spectral lines the sca.ttered light
ranges frorn 1 x i0~ to 4 x 10~ tbat of the peak count rates. Upper
limits to scattered ligbt at 2 diodes frorn the lines range from 7 x
10~ to 1 x 102 the peak count rates. An anomalous feature on tbe blue
tube with a periodic structure of 4 diodes is not understood.