Hi Tim,

Although somewhat outside the scope of this INDI forum, one traditional way to get a Celestron mount PEC curve is to use CPWI (free), and PECTool (also free). You drive the telescope during the test with your guider and CPWI, and then record N PEC curve sessions (batch process, averaged) with PECTool. After it's done, upload the curve to the mount using PECTool. Once uploaded, it is semi-permanent (until a new curve is done or disabled). FYI, PEC must be enabled on each mount power-up (hand controller or INDI mount - control tab). On startup, the index position of the worm gear will be found, and then you can start the PEC playback.

You can find both free Celestron software programs (CPWI and PECTool) on the Celestron support site:
www.celestron.com/pages/manuals-software

Good luck and CS,
Doug S.

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