| Abstract from DBPedia | An equatorial mount is a mount for instruments that compensates for Earth's rotation by having one rotational axis, the polar axis, parallel to the Earth's axis of rotation. This type of mount is used for astronomical telescopes and cameras. The advantage of an equatorial mount lies in its ability to allow the instrument attached to it to stay fixed on any celestial object with diurnal motion by driving one axis at a constant speed. Such an arrangement is called a sidereal or clock drive. Equatorial mounts achieve this by aligning their rotational axis with the Earth, a process known as polar alignment.赤道儀式架台（せきどうぎしきかだい、英: Equatorial mount）とは、極軸=赤経軸と、それに直交した赤緯軸の2軸で構成された架台である。 (Source: http://dbpedia.org/resource/Equatorial_mount) |
