Plot shows the PSL warming up by 2.5deg.  Both IO GigE cameras see the change, but the change on IO GigE 2 can't be explained by just the change caused by the EOM crystal.

    - temperature change, PSL North = 2.5degF
    - delta IO GigE camera 1 X (channel 1) = 0.73 pixels, 4.1um
    - delta IO GigE camera 2 X (channel 5) = 11.2 pixels, 62.7um
    - IO GigE camera 1 X distance from PMC waist = 0.689m, angle change = 5.9urad
    - IO GigE camera 2 X distance from the output of the EOM = 2.7m, angle change = 23urad
    - EOM input = 0.746m from PMC waist, angle change = 5.9urad, beam position change = 4.4um
    - Expected change at IO GigE 2 = 20.5um (total beam postion change) = 3.7 pixels
    - Unexplained beam position change at IO GigE 2:
        - pixels: observed = 11.2, calculated_expected = 3.7, unexplained = 7.5
        - um: observed = 62.7, calculated_expected = 20.5, unexplained = 42

EOM crystal properties:
    - index of refraction = 1.771
    - length = 40mm
    - angle of wedge 5.7deg (2.85deg each side)