I am not familiar with ninox... and I am not entirely sure what you are trying to achieve (I can't open files in link you provided, it wants me to authorize some zip utility, but I do not want my computer clouded with stuff I do not recognize).
If you want to process images of Moon (taken with telelens and telescope) in Registax, take video file first.
Then you process it with
Pipp (this will, among some other things, center the Moon in the frame).
You can then process this with
AutoStakkert (it is better than Registax, which is not supported any more), and then adjust wavelets in Registax v6.