xodrâhbord, râhbord-e xodkâr
The act or process of guiding a telescope automatically.
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.
Fr.: précision du guidage
The accuracy (expressed in arcseconds) with which a → telescope follows the → rotational motion of the → Earth.
Fr.: centre de guidage
In the → epicyclic theory of → galactic rotation, the center of the → epicycle.
Fr.: lunette de guidage
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.
Fr.: guidage décalé
Guiding an astronomical exposure on a star, when the object of interest is nearby, but invisible.