Index
Tilt
The tilt angle of a telescope axis.
- Input Format:
-
A sexagesimal number
between -90 and 90 degrees, exclusive.
- Operators:
-
-
-a
- The unary minus operator changes the sign of its operand.
- Use with do-loops:
- When a Tilt variable is used as the dependent variable of a
do-loop, the associated loop increment is
specified as a Sexagesimal constant.
- Context:
- Telescope axes can not be aligned to the precision needed by the
CBI. The deviation of the orientation of an axis from the ideal
is represented as a tilt.
The
tilts
and collimate
commands use
Tilt datatypes to tell the control system the size of these tilts.
Martin Shepherd (9-Oct-1997)