THE ROTATION MATRIX FOR
CALCULATING V2, V3 OFFSETS IN MODE 2 FOS TA


CAL/FOS-085


A.L. Kinney and G.F. Hartig
March, 1990

INTRODUCTION

This is a check of the rotation matrices YIFMTRXA and YFMTRXB used to
calculate the V2, V3 offsets from the offsets calculated in FOS Mode 2
TA. Both the Binary Sea.rch and the Firmware use the same rotation
matrix. The currently entered values of the matrixes are incorrect
both in sca.le and in sign. (The only documentation on these matrixes
is a letter from W. Bloomquist to Harms dated August 21 1980 wfrich
contains one error in angle between V2, V3 and FOS X, Y coordinates
and has the sign reversed on the FOS Y coordinate.) The correct values
are calculated.