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so-90prime / 90prime

General repo for everything related to 90Prime (docs, diagrams, thoughts)
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Guiding with new guide camera: Next steps #50

Open dsand opened 2 years ago

dsand commented 2 years ago

During Feb 2022 run, we made good progress on guiding with the new camera, but also found and fixed a bug that we did not fully get to test on sky. This issue is to track future progress on guiding and learning to guide with phd2.

@cjastro and I discussed and we agree the next steps were:

  1. Test new code that allows for fractional arcsecond moves (this was the bug fix mentioned above).
  2. Use default phd2 guide camera setting, and log the results using the internal tool for further inspection. On several fields.
  3. Systematically try out the other guide algorithms beyond the default in phd2. log results using internal tool.
  4. Systematically explore different guide camera exposure times. We found that the mount can take 1-5sec to full respond to an offset command, so this might represent a floor for guide camera exposures.
  5. Check the 'calibration' that phd2 does across the sky. do large slews require recalibration of guiding (hopefully not).
dsand commented 2 years ago

Will work on this during April 19, 20, 21 2022 run.

dsand commented 2 years ago

We were able to get some on-sky guiding time in. We were able to quickly calibrate the guider, and guide on stars in two fields before we had to close for wind. This is promising, but we will spend more time on this in future runs.