| Parameter | Mand | Type | Default | Constraints |
| xrayset | yes | set | | |
File name for the fits binary table containing X-ray source positions and their errors.
|
| opticalset | yes | set | | |
File name for the fits binary table containing optical source positions and their errors.
|
| findrotation | no | boolean | no | |
Search for a rotational offset or not?
|
| niter | no | integer | 3 | 1–8 |
Once a solution is found a new iteration can be made using a smaller grid size.
This parameter determines the number of iterations.
|
| maxoffset | no | real | 8.0 | 4.0–15.0 |
Constraint on the maximum RA/DEC offset.
|
| maxrotation | no | real | 1.0 | 0.5–4.0 |
Constraint on the maximum rotational offset.
|
| maxdist | no | real | 20.0 | 10.0–120.0 |
All optical sources with distances  maxdist will be removed from the
source list, in order to speed up the correlation.
|
| maxposnerr | no | real | 20.0 | 1.0–120.0 |
Neglect X-ray sources with positional errors maxposnerr in
position fitting in order to get a closer match to the real positions on
the sky.
|
| usemaxdist | no | boolean | yes | |
Use maxdist to make a preselection of optical sources?
|
| minbmagn | no | real | 0.0 | -2.0–30.0 |
Preselect the optical list on basis of B Magnitude. Here the minimum is set.
|
| maxbmagn | no | real | 26.0 | -2.0–30.0 |
Preselect the optical list on basis of B Magnitude. Here the maximum is set.
|
| usebmagn | no | boolean | no | |
Use the B magnitude to make a preselection of optical sources?
|
| bmag | no | string | Bmagn | |
Column name of optical B magnitudes (column in single precision)
|
| minrmagn | no | real | 0.0 | -2.0–30.0 |
Preselect the optical list on basis of R Magnitude. Here the minimum is set.
|
| maxrmagn | no | real | 26.0 | -2.0–30.0 |
Preselect the optical list on basis of R Magnitude. Here the maximum is set.
|
| usermagn | no | boolean | no | |
Use the R magnitude to make a preselection of optical sources?
|
| rmag | no | string | Rmagn | |
Column name of optical R magnitudes (column in single precision)
|
| makeimage | no | boolean | no | |
yes: the grid containing likelihood values will be written as a fits image file
|
| imagename | no | filename | likelihood_test.fits | constraints |
the name of the image file containing the likelihood values
|
| opticalra | no | string | CAT_RA | |
Column name of optical catalogue position RA (column in single or
double precision)
|
| opticaldec | no | string | CAT_DEC | |
Column name of optical catalogue position DEC (column in single or
double precision)
|
| opticalradecerr | no | string | CAT_RADEC_ERR | |
Column name of optical catalogue position error (column in single or
double precision)
|
| opticaltableext | no | string | RAWRES | |
Optical catalogue fits table extension name
|
| xrayra | no | string | RA | |
Column name of X-ray source position RA
|
| xraydec | no | string | DEC | |
Column name of X-ray source position DEC
|
| xrayradecerr | no | string | RADEC_ERR | |
Column name of X-ray source position error
|
| xraytableext | no | string | SRCLIST | |
X-ray source list fits table extension name
|
| calculateoffsets | no | boolean | yes | |
Calculate offsets; if no: use offsets/rotation provided by input parameter
|
| raoffset | no | real | 0.0 | |
RA offset (arcsec) to be used if calculateoffsets=no
|
| decoffset | no | real | 0.0 | |
DEC offset (arcsec) to be used if calculateoffsets=no
|
| rotation | no | real | 0.0 | |
rotation angle (degrees) to be used if calculateoffsets=no
|
| withmatchtable | no | boolean | no | |
write optional table of matched objects
|
| matchset | no | string | matches.fits | |
name of matched objects file
|
| rawxsyserr | no | real | 1.5 | |
systematic error of input X-ray positions
|
| minxsyserr | no | real | 0.2 | |
irreducible systematic error of X-ray positions
|
| maxsig | no | real | 5.0 | |
sigma cutoff for X-ray/optical matches
|
| usemaxsig | no | boolean | yes | |
use sigma cutoff limit
|
| Parameter | Mand | Type | Default | Constraints |
