WCS-tools: A modular collection of programs to manage Coordinate Conversion. The programs works on FITS images The WCS-tools are available at I.R.A. on the alpha workstations You can get information about programs with man command: i.e. man addpix WCSTools Programs ----------------- addpix Add a constant value(s) to specified pixel(s) delwcs Delete the WCS keywords from an image. If both EPOCH and EQUINOX are present, EQUINOX is also deleted. 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 imcat List catalog sources which should be found in the area of the sky covered by a specific image. imgsc List Guide Star Catalog sources which should be found in the area of the sky covered by a specific image using its WCS. imhead Print FITS or IRAF header imrot Rotate and/or reflect FITS or IRAF image files 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. imuac List USNO A Catalog sources which should be found in the area of the sky covered by a specific image using its WCS. imujc List USNO UJ Catalog sources which should be found in the area of the sky covered by a specific image using its WCS. imtab List sources from a tab-table catalog which should be found in the area of the sky covered by a specific image using its WCS. imwcs Automaticaly find stars in a FITS or IRAF image, match them to HST Guide or UJC Stars, compute the relation between sky coordinates and image coordinates, and write in in the image header. [after U of Iowa SETWCS] setpix Set specified pixel(s) to specified value(s) sgsc Search the HST Guide Star Catalog given a region on the sky. sethead Set header parameters in FITS or IRAF images. suac Search the USNO A Catalog given a region on the sky. sujc Search the USNO UJ Catalog given a region on the sky. scat Search the HST GSC, USNO UJC, or a local catalog given a region on the sky. sky2xy Print image pixel coordinates for given sky coordinates on the command line or in a list file. skycoor Convert between J2000, B1950, and Galactic coordinates from the command line or a file. xy2sky Print sky coordinates for given image pixel coordinates on the command line or in a list file. Contact Person: M.Nanni nanni@ira.inaf.it