Len,
You are killing it on these single frame Moon shots. Seriously as good or better than a lot of lucky imaging stacked images made from video that I have seen.
Thinking you must have some technique tips for the rest of us

This one seems almost sharper than the other 2 you have also recently posted, but all are VERY well done. I will need to get my new RF 100-500 pointed at the Moon at some point soon and see what I can do with it, although as of now I do not have any extenders for it. Maybe soon on that.
ML