The base was there the first time I tried the mission. But I got killed on my way home (damn gothris).
I had saved the game, so I started over, but when I go to delta prime there is no base, only the jumppoint to gamma. Pressing 'n' only gives the jumppoint to gamma. It's not on the nav map either (ctrl-m)
So I thought, maybe I saved before talking to the lady. So i selfdestructed and restarted my saved game. When I talked to the lady she was mad cause I hadn't taken off on my mission yet. So that seemed to be ok.
but when I arrived in delta prime, again no delerict base ((
Hmm strange, I just quited the game and started it again. Now the base is there again.
So simple solution : completely quit the game and start it again. Then fly your saved mission and the base will be there again.