How can a hubble take a picture of our galaxy?

We can take only inside-view pictures of the Milkyway. Not even Hubble can exceed this limit. Rightly you said and one needs to climb up 10000 light years in the direction of 'Coma Berenices' or 'Sculptor' to take a shot. Hubble was put there so as to be free from the atmospheric effects in its photoes.