Aboard

Stand in the payload bay

Sixty feet long and fifteen across, at the size it really is. The geometry is NASA’s own, in inches, converted once and checked against the published vehicle rather than eyeballed.

There are no payload bay doors here. NASA’s library does not contain them, so this does not draw them — the sill wedges, EVA rails and latch hardware in the asset are the structure around the opening, not panels. The bay is modelled permanently open, which is how the orbiter flew on orbit anyway.
A camera feed carries attitude and no position, so on a device without an AR session turning the phone looks around and walking does not move you. That is also what an astronaut in the bay was doing: holding station on a handrail.