Dice an image or cube into JSA tiles

#### Description:

This routine creates multiple output NDFs by dicing a supplied 2D- or 3D- NDF up into JSA tiles (i.e. it is the inverse of JSAPASTER). The spatial WCS of the input NDF must matches the JSA all-sky grid.

#### Parameters:

The input 2D or 3D NDF - it need not have been created by a smurf task. Currently, it should be gridded on the JSA all-sky pixel grid, which means that in practice it probably will have been created by MAKEMAP or MAKECUBE.
The JCMT instrument (different instruments have different tiling schemes and pixel sizes). The following instrument names are recognised (unambiguous abbreviations may be supplied): " SCUBA-2(450)" , " SCUBA-2(850)" , " ACSIS" , " DAS" . The dynamic default is determined from the input NDF if possible. If this cannot be done, then no dynamic default is provided, and the user is prompted for a value if none was supplied on the command line. []
Returned holding the zero-based indices of the created JSA tiles. The number of such indices is given the " NTILE" parameter
Determines the projection used by the output NDFs. The allowed values are " HPX" (HPX projection centred on RA=0h), " HPX12" (HPX projection centred on RA=12h), " XPHN" (XPH projection centred on the north pole) and " XPHS" (XPH projection centred on the south pole). A null (!) value causes " HPX" to be used. [" HPX" ]