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Hemi, there's also a "Pointing Accuracy Enhancement" function described in the Synscan manual section 11.2:
I suspect few use it because of where its buried in the menus, and its a tad fiddly in the dark with the 2 second wait in step 3:
1. Perform a 1-star alignment, 2-star alignment, or a 3-star alignment.
2. Choose a celestial object in a zone of interest as reference by referring to a sky map or planetarium software. In general, it is a rather bright star, but users can also use other objects. Use the SynScan hand control to control the mount to point the telescope to the reference object.
3. Use one of the following operations to start the PAE calibration:
• Press the “UTILITY” shortcut key, access to sub-menu “PAE\PAE Correction”, and then
press the ENTER key.
• Press and hold the ESC key for two seconds.
4. The screen will display “Re-centering Obj.:” in the first row, and display the name of the reference object in the bottom row. (If the last object is launched from a PC, then instead of the name of the reference object, it will display “The last target”.) Now use the direction keys of the hand control to center the object in the telescope’s FOV, and then press ENTER to confirm. Remember to end the centering operation by pressing the Right and Up direction keys together.
5. Repeat Step 2 to 5 for viewing different portions of the sky.
Note:
• Whenever the SynScan hand control locates an object, it will automatically check whether any PAE calibration data is available, and apply the compensation accordingly. No manual intervention is required.
• If multiple PAE calibrations are performed in the same zone, the previous calibration data will be overwritten.
• Users can access the menu “UTILITY FUNCTION > PAE > Clear PAE data” to clear all PAE calibration data.
• The PAE calibration data will be automatically cleared after a 1-star alignment, 2-star alignment or 3-star alignment.
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