...
- Open the WaveTune. The default settings are shown below. Click OK and continue. You will see the following error because the Pharao camera is not connected. It is fine to click CONTINUE. If other errors pop up, it means that the HASO or DM connection is not correct. It will most likely be the DM (wavefront corrector) as shown below. In that case, power cycle the DM controller and reconnect the ethernet cable between DM controller and the server until the error clears. This might happen when there's a power outage or after tunnel measurement.
- Set up the HASO exposure time. Use similar parameter as in the WaveView setting, but take at least 20-shot sum image to improve the SNR.
- Save the current position of the pistons as initial (in the same DM folder where you save the wavefront).
- Check if phase slope can be calculated from the HASO images. This can be done by clicking the Run arrow head in AO tab. Phase will be up dating if it works. If it doesn’t, check trigger setting and exposure time, if beam is blocked, or filters are too much (it needs at least 10% of the maximum pixel count to work). Also, if the iris in front of the DM is close, it may also cause problem to retrieve the phase.
...