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GoTo (telescopes)
In amateur astronomy, "GoTo" refers to a type of telescope mount and related software which can automatically point a telescope to astronomical objects that the user selects. Both axes of a GoTo mount are motor driven and are controlled by either a microprocessor-based integrated controller or a personal computer, as opposed to the single axis semi-automated tracking of a traditional clock drive mount. This allows the user to command the mount to point the telescope to a right ascension and declination that the user inputs or have the mount itself point the telescope to objects in a pre-programmed data base including ones from the Messier catalogue, the New General Catalogue, and even major solar system bodies (the Sun, Moon, and planets).
Like a standard equatorial mount, equatorial GoTo mounts can track the night sky by driving the right-ascension axis. Since both axes are computer controlled GoTo technology also allows telescope manufacturers to add equatorial tracking to mechanically simpler alt-azimuth telescope mounts.
==How a GoTo mount works==
GoTo mounts are ''pre-aligned'' before use. When they are powered on, they may ask for the user's latitude, longitude, time, and date (they can get this data from a GPS receiver connected to the telescope, or even built into the telescope mount itself and the telescope mount controller can have a real time clock).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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