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Troy the system still had a bit of flexure when this data was collected.
I have put turnbuckles on the RH200 rings as the RH200 was moving relative to the camera due to gravity. The very solid double bar the System is mounted on was twisting torsionally. This twist varied with mount orientation.
At F3 the CFZ is less than 20 micron. The PL16803 camera sensor has a diagonal of 52 mm which is larger than the fully corrected 42 mm field of the RH200. So even if everything was perfectly aligned and no flexure the corners would still not be as 'good' as the centre of the field.
The guide camera is on top of the RH200 rings.
The front turnbuckles are going to get a custom made crossbar ( like the one at the rear) which would then eliminate the tiny bit of flexure still present. I hope.
Bert
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