Klaus, Buy this Meade 20 inch MAX-xxx ($35,000) and tow it to a spot roughly 5 miles north-east of Tonopah , Nv and you can see the footprints on the moon and billions of miles beyond.
I suggest Tonopah due to the fact that it is the darkest spot within the continental US. And you can see more stars than you ever knew existed with the naked eye on most cloudless evenings.
Even with a cheap pair of binoculars, it's damn impressive.