Owen had suffered a poor start to his Madrid career but his first goal has given him a real boost.
"This was a massive game, so to score the winner in front of your home fans in a Champions League match was a great feeling," said Owen.
"I just wish the timing could have been a bit better, in that maybe I could have scored it a little sooner.
"I think we were all a little edgy at first tonight but scoring settled me right down. It's what I have been waiting for since I came here.
"I have put in some good performances, and some okay performances since I arrived here, so it was important for me to score a goal because that is an important part of my game. It is just a relief to get off the mark.
"Things are slowly getting better and better for me now. It is not easy living in a hotel room all the time, but I think everything is starting to come together."