Hubble space telescope 
Telescope placed in orbit above Earth’s atmosphere (370 mi), making it possible to observe the universe as never before.
Panel that opens and closes over the telescope’s optical system.
Part containing, in particular, a cooling system that protects the scientific instruments.
Power supply device that converts solar energy into immediately usable electrical energy.
Conductor that transmits images to Earth by means of a communications satellite.
Prevents stray light from entering the telescope.
fine guidance system
Makes it possible to point and control the telescope with great precision.
Mirror that sends light back toward the scientific instruments through a hole in the primary mirror.
Mirror that reflects the light of celestial bodies, directing it toward the secondary mirror.
These include cameras, spectrographs and photometers.