That fin looks like and an Arado, but I don't know which one.
Regarding the Aerostar, I replied to an ad for UAV pilots. The UK company were providing pilots to operate the aircraft in places that Aeronautics own personnel could not. The training was at Gvulot, an airfield in the Negev desert. I'll upload some pictures soon, if you like. I am now doing something completely different, but it was an interesting experience.