This **legacy video** describes how to train the Paramount's periodic error using TheSky version 10.5.0 Build 13095 and earlier (June 2021).

To use the improved PEC training feature, from TheSky, click Help, Check for Updates, and install the latest release. Next, from the Telescope window, click Tools - Bisque TCS - Periodic Error Correction - Train PEC button to train your Paramount's periodic error.

This legacy video walks you through measuring, correcting, and validating your period error correction (PEC) curve on a Paramount mount using TheSky Professional.

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