Compute Pec Curve Tab - Paramount Fitness ME II User Manual

Paramount User Guide
Model PEC Index Values
0 – 1249
0 – 1124
0 – 999
0 – 499
0 – 499

Compute PEC Curve Tab

The table below lists the maximum peak-to-peak periodic error specification for each model Paramount
mount.
Model Maximum Peak to Peak Periodic Error (arcseconds)
7
7
7
7
7
This periodic error can be corrected (see "Collecting and Using Periodic Error Tracking Data" on page 142)
so that the corrected periodic error is below errors introduced by local seeing. In other words, the tracking
error introduced by mechanical periodic error is "in the noise" and not readily detectable at the eyepiece
or in the measured FWHM of stars on a CCD photo.
Under all but extremely exceptional seeing conditions, measuring periodic error can be difficult, even
using an autoguider, because the random errors caused by local seeing conditions can be larger than the
actual periodic error of the worm and gear.
The Compute PEC Curve tab offers an extremely powerful algorithm that can be used to precisely
determine the mount's periodic error, independent of the errors introduced by local seeing conditions.
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