A reflecting telescope.
The Newtonian achievement is the Newtonian telescope. It is a kind of reflecting telescope that was created during the seventeenth century by Isaac Newton
HST is a Cassegrain reflecting telescope using the Ritchey–Chrétien design, with an aperture of 7.9' (2.4m). It has observational ability in the Ultraviolet, Infrared, and Visible light spectrums.
The diameter of the objective mirror, or of the tube if it has one.
More than 10,000 scientists built the Hubble Telescope. They were assigned to work on different parts of the Hubble Telescope.
the reflecting telescope was!!
Sir Isaac Newton
with the help of reflecting telescope
Even though other scientists like Galileo had the idea for a reflecting telescope, Sir Isaac Newton is credited with perfecting the reflector telescope in 1668.
Sir Isaac Newton.
sir issac newton developed it
Optics is the study of the behavior of properties of light, and there were quite a few philosophers that inspired Newton such as Robert Boyle, Rene Descartes, Sir Frances Bacon, and especially Galileo Galilee. This should help..
Isaac Newton invented the reflecting telescope.
Newton did not invent the telescope, he invented the reflecting telescope. The reflecting telescope was a major improvement over the distorting refracting telescope.
Isaac newton developed the laws of gravity when an apple fell out of a tree and hit him on the head.
It is a reflecting telescope
A reflecting telescope uses mirrors while refracting telescopes uses lens. The refracting telescope also had chromatic aberration and bad resolution while the reflecting telescope had none of these.