if you do want to strip the anodizing & polish it to a mirror finish, i wouldn't cos it's a pain to look after, certain brands of oven cleaner or very mild coustic soda (remember kids, add soda to water not eater to soda & do it outside in the fresh cos it's nasty!) will take it back to bare ally, it will be black, then set about it with mops on a drill you aren't going get upset about dieing. i would use auto glym metal polish as it is finer than auto sol, which is quite course. do expect black hands, face & snot!! having polished 1 motor bike frame, forks, engine cases etc I am NEVER doing it again, next one's getting powder coated.
treat your freshly polished frame to a rub down with baby oil (yes, really) & keep a bottle in the shed, it helps protect the bare ally & makes keeping on top of the finish as the last thing you want is for it to start pitting cos it will be a git to get out & the average bike tube isn't that thick.
hope i haven't tought anyone to suck eggs, just passing on the benifit of my experience........ but if it is anodised, do yourself a favour & leave it alone!