The previous lunar mosaic was not very good. Some parts of the moon were blurred. A quick reprocess of one of the avi file tells me that the problem arises from post processing. The problem was mainly due to the poor selection of the alignment points. After some experiments, I found that the optimal number of alignment points is 4 to 5. The location of the alignment points is also important. I cannot generalize the general rules, but it seems that both high and low contrast locations are important. If you want to reveal the details of the low contrast location, one needs to pick an appropriate location for it. So don’t just focus on those high contrast locations.