wcstools(1)
Programs to access image world coordinate systems and catalogs
Setting an Image World Coordinate System
- imwcs
-
Automatically find stars in a FITS or IRAF image, match them to HST Guide
USNO A or USNO UJ Stars, compute the relation between sky coordinates and
image coordinates, and write in in the image header. [after U of Iowa SETWCS]
- delwcs
-
Delete the WCS keywords from an image. If both EPOCH and EQUINOX are
present, EQUINOX is also deleted.
Using an Image World Coordinate System
- imcat
-
List catalog sources which should be found in the area of the sky
covered by a specific image.
- imsize
-
Print center and size of image using WCS keywords in header
- imstar
-
Find and list the n brightest stars in an IRAF or FITS image, with their
sky coordinates if there is WCS information in the image header.
- sky2xy
-
Print image pixel coordinates for given sky coordinates on the command line
or in a list file.
- xy2sky
-
Print sky coordinates for given image pixel coordinates on the command line
or in a list file.
Catalog Utility Programs
- scat
-
Search the HST GSC, USNO-A2.0, or other catalog given a region on the sky.
- skycoor
-
-
Convert between J2000, B1950, and Galactic coordinates from the command
line or a file.
Image Utility Programs
- addpix
-
Add a constant value(s) to specified pixel(s)
- edhead
-
Edit the header of a FITS file or the user parameters of an IRAF image file
using a the text editor specified by the EDITOR environment variable.
- gethead
-
Return values for keyword(s) specified after filename.
- getpix
-
Return value(s) of specified pixel(s)
- i2f
-
Read two-dimensional IRAF image file and write FITS image file
- imhead
-
Print FITS or IRAF header
- imrot
-
Rotate and/or reflect FITS or IRAF image files
- setpix
-
Set specified pixel(s) to specified value(s)
- sethead
-
Set header parameters in FITS or IRAF images.
- subpix
-
Subtract a constant value(s) from specified pixel(s)