the direction in the sky to which the telescope is pointed. Pointing also describes how accurately a telescope can be pointed toward a particular direction in the sky. For example, the pointing of the BIMA antennas can be affected by strong winds which cause the antennas to move about slightly. (See also text in SpecObsTech.)

Refers to orienting the spacecraft or its instrument such as a telescope, camera ,or a sensor towards a specific target or coordinates.

Positioning of spacecraft (i.e. telescope/instrument) towards the required sky position.

Positioning of spacecraft at a required sky position.

Generic term referring to the location on the sky of a single, dithered GALEX field of view. A single tile or a target may consist of one or more pointings.