The Robinson is in a rather annoying place; right in the middle?
Are you sure that's the Robinson
? The registry number on the saucer appears to be "NCC-()()()()-D" (sorry, I can't make out the four numbers after the NCC, so those () represent the unclear numbers, but it looks like a "-D" there at the end). So, hopefully this is just a temp cover.
Of course, the Excelsior was on "Raise The Dawn".