The tolerance in position (in radians). The behaviour differ for Short
and Zero spacings and Table or 3-D cubes as Single-Dish data.
If the Single-Dish data is a table of spectra, Spectra differing by less
than this amount will be added together prior to gridding. A recommended
value is below 1/10th of the Single Dish primary beam. This is valid for
Short Spacings and Zero Spacing cases.
If the Single-Dish data is 3-D data cube, SHORT_PTOLE is used only for
Zero Spacings. If no pixel is within SHORT_PTOLE of an Interferometer
pointing center, no short spacing is added for this field and an error
occur.
Default value is 0, meaning using 1/16th of the Single Dish primary
beam.
Gildas manager
2023-06-01