The deck-angle of the telescope (-360..360).

Input Format:

A sexagesimal number between -360 and 360 degrees, inclusive.

Operators:

-a

The unary minus operator changes the sign of its operand.

Use with do-loops:

When a DeckAngle variable is used as the dependent variable of a do-loop, the associated loop increment is specified as a Sexagesimal constant.

Context:

All of the radio receivers are mounted on a deck that rotates in the plane of the sky to keep the orientation of the sky fixed. The angle of this deck with respect to a (to be determined) fiducial point, can be specified with a DeckAngle datatype. The DeckAngle datatype is used by the slew command.