declination axis

astronomy

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June 25, 2026

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In astronomy, declination refers to the angular distance of a celestial body north or south of the celestial equator. It is one of two coordinates, along with right ascension, used to pinpoint an object's location in the sky. North declination is positive, while south declination is negative, with +90° marking the north celestial pole and -90° marking the south celestial pole.12

A declination axis is a component of an equatorial mounting on a telescope. This axis is perpendicular to the polar axis and allows the telescope to be aimed at celestial objects with different declinations.34

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The polar axis supports the declination axis of the instrument. Declination is measured on the celestial sky north or south from the celestial equator. The declination axis makes it possible for the telescope to be pointed at various declination angles as the instrument is rotated about the polar axis with…
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The polar axis supports the declination axis of the instrument. Declination is measured on the celestial sky north or south from the celestial equator. The declination axis makes it possible for the telescope to be pointed at various declination angles as the instrument is rotated about the polar axis with…
Read More