Details

Improvement

Status: Done

Resolution: Done

None

3

Telescope and Site
Description
 Turn off all perturbations again, but this time use the cmd file to add back 1 Zernike perturbation at a time to M1 only. I’d suggest an amplitude of maybe 250 nm.
 Single star on the boresight.
 For each Zernike index 422 (or some subset if this is too much), make a plot of the estimated Zernike coefficient vs input rotation angle. You should get sine waves for these, with periods as follows:
 Z4, Z11, Z22 estimated Zernikes are independent of input rotation angle.
 Z7, Z8, Z16, Z17 period is 360 degrees
 Z5, Z6, Z12, Z13 period is 180 degrees
 Z9, Z10, Z18, Z19 period is 120 degrees
 Z14, Z15, period is 90 degrees
 Z20, Z21, period is 72 degrees
 I predict that the above are periodic with rotTelPos, but not rotSkyPos.
 Note that phosim injects circular Zernikes, but ts_wep is estimating annular Zernikes, so we don’t expect to recover 2*250 nm (reflection so path length changes by 500nm!) if we inject a 250 nm perturbation.
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 is child task of

DM33116 Validate AOS for a rotated camera
 Done
Comparison of donuts given a single zk for a variety of `rotSkyPos`, keeping rotTelPos=0. The number in each postage stamp is the value of 'rotSkyPos' in that simulation.