Full moon over Plateau

Fujifilm X100s, 1/10s @ f/2.8, iso 3200

It is not the best photo quality-wise, because lots of noise reduction was needed. No tripod, so it had to be high ISO, and even with that I somehow ended up with 1/10s shutter.
Why is this photo not blurred? The secret - I think - lies in 3 or 4 pints of guinness I drank before going on a stroll.