The StellarMate Plus Manual
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XXX--but really min move is in units of pulse ms, so don't put out a shorter
correction pulse than XXX) and Max (don't put out a pulse greater than XXX.)
Note
You can make the GPG guiding less aggressive by reducing control gain.
If you want the guiding process to be less aggressive, make the guide
exposure pretty long (e.g. 3 or 4 or 5s), reduce the control gain, reduce
the prediction gain, and increase the min move. If you suspect that you
don't have much periodic error you should consider NOT using GPG.
Note
If you have no idea what to set Control and Prediction gains, keep them
around their defaults (in the 0.5 area).
Expert Settings
· Long-range Length Scale: Length scale of the long range kernel.
· Long-range Variance: Long-range kernel signal variance
· Periodic Length Scale: Periodic Kernel length scale
· Periodic Variance: Periodic kernel signal variance
· Short-range Length Scale: Length scale of the short-range kernel
· Short-range Variance: Short-range kernel signal variance
· Approximation Points: Number of points used in the Gaussian Process
approximation
· Num Periods for Inference: The min number of periods that must be sampled
before prediction is fully used. Before that, it is mixed with the
control/proportional guider.
· Num Periods for Period Estimate: The min number of periods that must be
sampled before GPG fully estimates the period.
Guiding Direction Control
You can fine-tune the guiding performance in the Control Section. The autoguide
process works like a PID controller when sending correction commands to the
mount. You can alter the Proportional and Integral gains to improve the guiding
performance if necessary. By default, guiding corrective pulses are sent to both
mount axis in all directions: positive and negative. You can fine-tune control by
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