It's a telescope,that uses reflectors for you to see the objective ;D.
The lenses used in reflector telescope is the concave lens.
A Cassegrain reflector
it is a reflector telescope
Reflector.
The Newtonian Telescope.
The HST is a Cassegrain reflector telescope.
Amazon has Reflector telescopes for about $260. Customer reviews for this telescope is high. Most of the reviews claim this telescope is absolutely amazing.
Isaac Newton.
Yes.
They both use a parabolic reflector.
1904
A reflector telescope collects light with a mirror. The mirror is located at the back of the telescope and reflects the incoming light to a focal point where it is then collected by an eyepiece for viewing.