Thank you horton, i printed out your instructions, and will use them, but.. right now i am having trouble LOADING tHE DARN plugin and making it work in Image j.
GEEZ, i'm just a regular guy,however, I'm a bit more stubborn than most, so i'll keep working on it.
I've been using REGI STAX, in the meantime.
It does poke out in 3d rpage, and has more things poking out of it.
The crater you refer to is a Rock, that has a gaping hole in one end. I'm trying to make some decent color images of the features, but the registration is abear.