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Portable Network Graphic  |  1996-04-23  |  7KB  |  242x277  |  8-bit (43 colors)
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OCR: MOUNTING .................... . .. ..... ... . . . . . .. . THERE ARE TWO main types of mountings - the structure that supports a telescope and allows it to point at the required part of the sky - altazimuth and equatorial. Each pivots about two axes. The altazimuth mounting swings in vertical and horizontal axes. The equatorial mounting has one axis parallel and another at right angles to the Earth's axis.