Matt H, Jason O, Aidan B, Thomas V

Aidan will write an alog regarding the alignment of the HWS optics in HAM4, this is more about the setup to do it.

We haven't been able to solve why the SR3 is pitched low and so I locked the face EQ stops of all three stages, then with Jason making sure the pointing of the HeNe of the total station was correct and that the beam splitter offsets were engaged and damping on, and Aidan standing at HAM4 directing me using the headsets, I altered the EQ stops on the optic of SR3 so as to steer the beam onto the center of SR2 optic (or as close as we could tell it was to center).

This was enough to allow the alignment of the HWS to begin. Just for curiosity we looked at how the beam was going from SR2 to SRM. Luckily we could see it and so we could steer the HeNe beam onto roughly the centre of SRM with ~1500 offset in pitch and ~1800 offset value in YAW on SR2 upper mass (note Jason seemed to think that the sign of which way the beam went up and down when he provided an offset was flipped. Maybe someone wants to look into that).  So thats a good sign.

Note: The HWS optics were aligned WITHOUT any offsets applied to SR2.