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sex2gol axe


NAME · USAGE · PARAMETERS · DESCRIPTION · FILE_NAMING_CONVENTION
EXAMPLE · TIME_REQUIREMENTS · BUGS · REFERENCES · SEE_ALSO

NAME

sex2gol -- generates a Grism Object List file from a SExtractor Object List.

USAGE

sex2gol direct grism config

PARAMETERS

grism
Name of grism/prism image.
config
Filename of grism/prism extraction configuration file.
(in_sex = "") [string]
Name of input object catalog name (if different from default). The aXe default file naming conventions are described below.
(use_direct = yes) [yes|no]
Use the direct image to recompute object positions.
(direct)
Name of direct image.
(dir_hdu) [int]
Extract the CD matrix from this extension of the direct image.
(spec_hdu) [int]
Extract the CD matrix from this extension of the grism/prism image.
(out_sex = "") [string]
User-specified name of output object catalog name (if different from default). The aXe default file naming conventions are described below.

DESCRIPTION

This task generates a Grism Object List file using a SExtractor Object List as input. The object list can be either related to a direct image (use_direct="YES") or to the grism image. If a direct image is used, the object positions are recomputed (in world coorinates) and then transferred to image coordinates on the grism image. A small offset between the direct image and the grism image is allowed.

If no direct image is used, the pixel coordinates of the object list are directly used. If they are not present in the list, pixel coordinates are computed using world coordinates and the WCS information in the grism image.

Please consult the manual for the object list format!

FILE NAMING CONVENTION

aXe tasks use default names for input and output files based on the given name of the "grism" image. For this task the default input catalog would be called <direct-rootname>_<science extension>.cat and the output catalog file would be <grism-rootname>_<science extension>.cat.

The in_sex and out_sex parameters may be set to override these defaults.

EXAMPLE

To build the object catalog for the test images test_direct_1.fits (direct image) and test_grism_1.fits (grism image) using the configuration file SLIM.conf.test.0:


        ax> sex2gol test_direct_1.fits test_grism_1.fits SLIM.conf.test.0

TIME REQUIREMENTS

BUGS

REFERENCES

Refer to manual for more detailed information about using this aXe task:


http://www.stecf.org/instruments/ACSgrism/axe/

SEE ALSO

gol2af


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