Topic: Newtonian focus

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Newtonian focus

The Columbia Encyclopedia, Sixth Edition
Newtonian focus see telescope . Author not available, NEWTONIAN FOCUS., The Columbia Encyclopedia, Sixth Edition 2008... Read more
Newtonian focus
A Dictionary of Astronomy Newtonian focus A focal position for a reflecting telescope ... from the main mirror is diverted to the Newtonian focus by a flat diagonal mirror, or a prism ... and focal length are the same for the Newtonian focus as for the prime focus. Read more
Cassegrain telescope
A Dictionary of Astronomy ... which a convex secondary mirror reflects light to a focus through a hole in the primary mirror; it is an ... through which the light is brought to the Cassegrain focus. (The term Cassegrain focus is also applied to any focus similarly located behind a mirror, such as in a ... A Cassegrain reflector is ... Read more

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