我的myt也遇到了和你一模一样的问题。我在myt官网上也没问到答案。后来在www.cloudynights.com看到有大神在几年前就在问这个问题。我就给他发私信请教,他给我的建议是:
Yeah TheSkX autoguiding is pretty poor compared to PHD2 but @focus3 makes it a more compelling solution.
The fundamental issue is that TSX is easily confused by hot pixels or other stars. The good news is you only need to calibrate a particular setup once near the celestial equator / meridian interception point and you can reuse it. Here is what I do to calibrate it.
1) take dark frames of the same exposure you are calibrating with and set tsx to subtract those darks
2) change the calibration distance to 50-80 arc-seconds
3) choose a star away from other stars and any remaining hot pixels
4) take image and draw a very small subframe around the calibration star. Make sure it is a box to allow distance for the star to move in both directions