SIM Shift and Twist Trends

This page shows trends of SIM shifts (dy and dz) and twist (dtheta). All quantities are directly taken from pcaf*_asol1.fits files. The units are mm for dy and dz, and second for dtheta. The sudden shifts in the plots were due to fid light drift (see a memo by Aldocroft fiducial light drfit).

twist plot

The following plot shows the dthera trends classified by the instruments (ACIS-I, ACIS-S, HRC-I, and HRC-S).

thera plot

SIM X, Y, Z, and Pitch and Yaw Amps of Dithers

sim plot


If you have any questions about this page, please contact swolk@head.cfa.harvard.edu.

Last Modified: Apr 19, 2017