An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 3 Search : alignment
alignment
  آختش، آخطش   
âxateš

Fr.: alignement   

The fact of being in line or bringing into line.

Verbal noun of → align; → -ment.

misalignment
  دژخطش   
dožxateš

Fr.: mésalignement   

Deviation of the chain of → optical components from the optimum → alignment in an instrument which leads to → loss of → light and poor → image.

From mis- a prefix meaning "ill, mistaken, wrong, wrongly" + → alignment.

Dožxateš, from dož-, → dys-, + (â)xateš, → alignment.

polar alignment
  آخطش ِ قطبی   
âxateš-e qotbi

Fr.: alignement polaire   

The process or the state of making a → telescope's → polar axis → parallel to the → Earth's → rotation axis, that is with the → true North or → South  → celestial pole. When this is accomplished, the sky's motion can be cancelled out simply by turning the axis (either by hand or with a motor → drive) at the same rate as the rotation of the Earth, but in the opposite direction.

polar; → alignment.