[jerojero]

Pretty sure you can rent telescope time it's just booked so you might have to wait.

You can still go physically, there's tours and such. But it doesn't make sense for a physicist to go there when all the imagery is captured by a computer anyway.

Also, if you've been to those altitudes you know it's not a walk in the park either!

[bradknowles]

There are plenty of remote telescope services you can make use of. The one at http://telescope.live/ is probably one of the best known in the astrophotography communities I am a member of, but there are many others.