Charl wrote:I wonder if that hole in roof is glazed... would be a heck of a draft...
This aircraft replaced the the Starlifter, they put the telescope in the front portion on the C141 , on the that aircraft it was open to the elements, the operators were open to the outside , think I recall up to 26,000 ft course well wrapped up and on O2 , I don't know anything about the the SP , there was talk that they were looking at a sealed observatory due to the optics getting better, be nice to see a doco on the aircraft and its missions here.

As much i hate to stoop to yet another americanism ...... "awesome "work Charl