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Plots update
rate = 5 seconds by default.
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FSM positions
show current FSM X and Y locations in arcseconds. Travel = +/- 1.5”. As current position approaches +/- 1.5”,
telescope is commanded to move in opposite direction.
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FSM residuals
show the current FSM error in arcseconds.
The blue plot shows the current DM residuals in microns. AO performance can be crudely judged by
this plot; where DM residuals ~ 0.05 –
0.1 microns indicate a good lock. 0.1
– 0.2 microns are usual in poor seeing conditions.
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Average Subap
Flux is a plot of the brightness of the guide source. Values > 200-300 DN are needed to
establish any lock.
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