Trip aces in a tough spot, easy fold?

[Karak567]

Villain is an unknown. I thought I'd take advantage of the button and try to take this pot preflop. I think this is an easy turn fold, no?

Party Poker No-Limit Hold'em, $ BB (6 max, 5 handed) internettexasholdem.com

Hero ($199)
SB ($567.52)
BB ($165.89)
UTG ($105.95)
MP ($318.93)

Preflop: Hero is Button with A[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $1. MP posts a blind of $3.
UTG calls $2, MP (poster) checks, <font color="#CC3333">Hero raises to $15</font>, <font color="#666666">1 fold</font>, BB calls $13, UTG folds, MP folds.

Flop: ($36) A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $30</font>, BB calls $30.

Turn: ($96) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB insta pushes, Hero folds.