The complement of → declination; the angular distance along a great circle from the celestial pole, i.e., 90° - declination.
Codeclination, from → co- + → declination.
Hamvâkil, from ham-, → co-, + vâkil, → declination.
1) Angular distance (symbol δ) from the celestial equator. One of the coordinates,
with → right ascension, that defines
the position of a heavenly body in the equator system. Declination is measured positively
(+) north or negatively (-) south of the celestial equator from 0° to
Fr.: axe de déclinaison
The axis to which the telescope tube is fastened in an → equatorial mounting.
→ declination; → axis.
parhun-e vâkileš, dâyeré-ye ~
Fr.: cercle de déclinaison
For a telescope with an → equatorial mounting, a graduated circle attached to the → declination axis that shows the → declination to which the telescope is pointing.
→ declination; → circle.
Fr.: déclinaison magnétique
In terrestrial magnetism, the difference between → true north (the axis around which the earth rotates) and magnetic north (the direction the needle of a compass will point,→ magnetic pole).
→ magnetic; → declination.