An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

The act or process of guiding a telescope automatically.

→ autoguider.

A → technique used in astronomical → observations to keep the → telescope→ tracking in pace with the → rotational motion of the → Earth. Guiding consists of maintaining the → image of a star motionless during the observation. See also → guiding accuracy, → guiding telescope, → offset guiding, → autoguiding.

Verbal noun of → guide.

The accuracy (expressed in arcseconds) with which a → telescope follows the → rotational motion of the → Earth.

→ guiding; → accuracy.

In the → epicyclic theory of → galactic rotation, the center of the → epicycle.

→ guide; → center.

A telescope which is attached to a second telescope being used for photographic purposes. The guiding telescope, mounted parallel to the optical axis of the main telescope, is used by the observer to keep the image of a celestial body motionless on a photographic plate.

→ guiding; → telescope.

Guiding an astronomical exposure on a star, when the object of interest is nearby, but invisible.

→ offset; → guiding.