| Parameter | Mand | Type | Default | Constraints |
| imageset | yes | string | image | |
|
The name of the input image.
| ||||
| srcexp | no | string | ||
|
Expression for defining the source position and parameters
| ||||
| withsourcepos | no | boolean | false | none |
|
If true, the source position must be
specified via the parameters coordtype,
x, y. Otherwise,
the source position is taken from the
centre of the source region defined in the srcexp parameter.
| ||||
| x | no | real | ||
|
The X coordinate of the position to convert
| ||||
| y | no | real | ||
|
The Y coordinate of the position to convert
| ||||
| coordtype | yes | string | eqpos | eqpos pos det |
The coordinate system for which the source position, specified
by the parameter x and y, is defined.
If coordtype is set to eqpos, then x, y
correspond to RA and DEC respectively in decimal degrees.
If coordtype pos, then x,y correspond
to POS coordinates.
(Note that the POS coordinates are defined relative to a norminal pointing position;
this is taken from the global attributes REFXCRVL and REFYCRVL of
the image dataset.)
If sourcecoords det, then x, y are
the x and y positions of the source centre, in DET coordinates.
| ||||
| Parameter | Mand | Type | Default | Constraints |