Tutorial:
Drift align with help of PHD2

Content:

1. My choice of equipment and software to do drift align
2. How to use PHD2 for drift align, Azimuth
3. How to use PHD2 for drift align, Altitude
4. Final result
5. Update tips on polar error

4: Final result

The result after this drift align, as you can see the guiding hold it in less than one arc second. But this has more to do with the precision of the mount. What's more important is that the rotation of field when doing long exposures is minimized.

Could it be easier?

Thanks to the people from the Cloudy Nights forum to refine my instructions!