The Hobby-Eberly Telescope works by refracting light through 1 meter long frames of glass, put together to form the lens, and uses the light to project images of what that light is coming from.
"Optical", in this case, simply means that they work with light.
A Galilean Telescope is also an Astronomical Telescope so it is just a subset of Astronomical Telescopes.
it doesnt
You walk up to the telescope and click on it but you can't move it!
Copernicus did not use a telescope in his astronomical work.
More than 10,000 scientists built the Hubble Telescope. They were assigned to work on different parts of the Hubble Telescope.
telescope
a prism, and the telescope
micorpope
As far as I know, there is no "optical radio telescope". There are, separately, optical telescopes (which work with visible light), and radio telescopes (which work with radio waves).
Copernicus did not use a telescope in his astronomical work, and probably never owned one.
Most famously he improved the telescope. His studied Astronomy with his telescope.