Here in good old Gosnells (suburban Perth) I can see mag 5-5.5 depending on conditions, light pollution etc etc. In 2003 when I went to Tibet I was at Everest Base Camp with an altitude of 5200 M and I swear I could see well below magnitude 7, I have never seen such a dark sky. There were so many stars that even finding Orion was a hassle. However, I wish I tried to look for Barnards loop, apparently its visable in the very darkest of skies
