- Form: WPREP image
WPREP writes a record into a batch surface photometry preparation file
opened using OPREP. The data written in each record are as follows:
- SKY value (from VISTA variable SKY)
- max. radius for photometry (from variable RMAX)
- estimated HWHM for the PSF (from variable PSF)
- contents of the AXES block (from AXES)
- image header.
This information is formatted to be read by RPREP. The file must have
already been opened with write-access using the `OPREP W' command.
NOTE: You must compute the image parameters above ahead of time, either
outside of VISTA or using the AXES command without the CORR option.
See Also: OPREP, RPREP, CLPREP