stars 10/20 vs unknown shall i stack off Y/N

[EC10]

Poker Stars, $10/$20 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

Hero (MP): $3,879
CO: $1,020
BTN: $1,745
SB: $2,044
BB: $1,218
UTG: $1,533

Pre-Flop: Q[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/spade.gif[/img] dealt to Hero (MP)
UTG folds, <font color="red">Hero raises to $60</font>, CO folds, <font color="red">BTN raises to $180</font>, 2 folds, Hero calls $120

Flop: ($390) Q[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/spade.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $200</font>, Hero calls $200

Turn: ($790) 4[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $580</font>