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history of astronomical telescopes
The simplest telescopes (e.g., the kind Galileo worked with) are built with two lenses in a tube (see [[Refraction]]).
The simplest telescopes (e.g., the kind Galileo worked with) are built with two lenses in a tube (see [[Refraction]]).
* Most of the history of astronomical telescopes has been dominated by either Keplerian refractors or Cassegrainian reflectors. The Cassegrain telescope was proposed by a priest. The Keplerian telescope was first proposed by Johannes Kepler, but first built by the Catholic priest, Christopher Scheiner. [http://www.scientus.org/Reflecting-Telescope-History.html]
During the twentieth century, [[astronomer]]s built huge telescopes. Some of the most famous in the United States are:
During the twentieth century, [[astronomer]]s built huge telescopes. Some of the most famous in the United States are: