Reflecting telescope essay

The reflector is simple and inexpensive to make. Large aperture primary mirrors (greater than 10 inches or 25 centimeters) can be made easily, which means that reflectors have a relatively low cost per unit of aperture. Reflectors have large light gathering capacities, and can produce bright images of faint, deep-sky objects for visual observing as well as astrophotography. One disadvantage of reflectors is that you occasionally have to clean and align the mirrors. Also, slight errors in grinding the mirrors can distort the image. Here are some of the common problems:

There are only a few sites capable of polishing the mirrors for these telescopes. SAGEM in France polished the four VLT mirrors, the two Gemini mirrors, and the 36 segments for GTC. [15] The Steward Observatory Mirror Lab cast and polished the two LBT mirrors, the two Magellan mirrors and the MMT replacement mirror. It is currently making the LSST primary mirror and the mirrors for the Giant Magellan Telescope. [16] The Keck segments were made by Schott AG. The SALT and LAMOST segments were cast and polished by LZOS. [17] The mirror for Subaru was cast by Corning and polished at Contraves Brashear Systems in Pennsylvania. [18]

1729  --   A huge development in refracting telescope happens during this time when
            lawyer Chester Moore Hall makes a lens to reduce chromatic aberration even
            further. He made the lens by cementing two types of glass (crown and flint)
            together. He proved that Newton’s statement that chromatic aberration could
            not be solved was incorrect!

In other types of high energy particle telescopes there is no image-forming optical system . Cosmic-ray telescopes usually consist of an array of different detector types spread out over a large area. A Neutrino telescope consists of a large mass of water or ice , surrounded by an array of sensitive light detectors known as photomultiplier tubes. Originating direction of the neutrinos is determined by reconstructing the path of secondary particles scattered by neutrino impacts, from their interaction with multiple detectors. Energetic neutral atom observatories like Interstellar Boundary Explorer detect particles traveling at certain energies.

Reflecting telescope essay

reflecting telescope essay

In other types of high energy particle telescopes there is no image-forming optical system . Cosmic-ray telescopes usually consist of an array of different detector types spread out over a large area. A Neutrino telescope consists of a large mass of water or ice , surrounded by an array of sensitive light detectors known as photomultiplier tubes. Originating direction of the neutrinos is determined by reconstructing the path of secondary particles scattered by neutrino impacts, from their interaction with multiple detectors. Energetic neutral atom observatories like Interstellar Boundary Explorer detect particles traveling at certain energies.

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