The biggest telescope on Earth is FAST (Five hundred meter Aperture Spherical Telescope) in China. Like the name suggests, it's 500 m (1640 ft) across. It's so big that it actually can't move, and can only stare at the sky directly above it.
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MOIYA MCTIER,
Astrophysicist, Folklorist, & Science Communicator
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Yes, the sky above the telescope changes over the course of a day and year, but the telescope can only see a thin strip of the entire sky. It's almost like if you put on a visor that only let you see out of a very narrow slit; you can see the world that passes in front of that narrow slit, but you can't look up or down.
Is the sky that is directly above a place changing over time or static? I'm pretty sure it changes since different constellations are visible at different times?