### SETPROJ

Set the projection geometry

#### Description:

Set the projection related global variables. These are then used by all the relevant applications.

This is an hidden ICL procedure that makes use of the SETGLOBAL command.

#### Usage:

setproj projection [racentre] [deccentre]

#### Parameters:

##### PROJECTION = _CHAR (Write)
The geometry that is to be used. This is explained in more detail in the section on projections. Allowed values: "NONE", "TAN", "SIN", "ARC", "GLS", "AITOFF", "MERCATOR" and "STG".

This parameter must be specified on the command line. It sets the value of the global parameter PONGO_PROJECTN.

##### RACENTRE = _CHAR (Write)
The centre of the projection in RA (i.e. the angle must be specified as hh:mm:ss.sss). This parameter is only required for PROJECTION values other than "NONE".

This parameter sets the value of the PONGO_RACENTRE global variable.

##### DECCENTRE = _CHAR (Write)
The centre of the projection in declination (i.e. the angle must be specified as dd:mm:ss.sss). This parameter is only required for PROJECTION values other than "NONE".

This parameter sets the value of the PONGO_DECCENTRE global variable.