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xy2sky(1) [debian man page]

xy2sky(1)						      General Commands Manual							 xy2sky(1)

Name
       xy2sky - Compute RA Dec from X Y using WCS in FITS and IRAF image files

Synopsis
       xy2sky [-vbjg] [-n ndec] file.fts x1 y1 ... xn yn
       or
       xy2sky [-bdjgv] [-n ndec] file.fts @listfile

Description
       xy2sky  (pronounced X-Y-to-sky) is a utility for getting the world coordinates of a set of image coordinates in a FITS or IRAF image. World
       coordinate system (WCS) information in the image header describes, in a standard way, the relationship between sky  coordinates	and  image
       pixels. This information is used by the program to transform image coordinate (X,Y) pairs to right ascension and declination sky coordinate
       pairs. The current version of the program prints the coordinates at the same equinox as is given in the image header, but  future  versions
       will  allow transformations to B1950/FK4, J2000/FK5, or galactic coordinates. Input and output files in the Starbase format will eventually
       be allowed.

Options
       -a     Append input line after output position

       -b     B1950 (FK4) output

       -d     RA and Dec output in degrees

       -e     Output in ecliptic longitude and latitude in degrees.

       -f <number>
	      Set third dimension for 3-D projections such as CSC

       -g     Galactic longitude and latitude output

       -i     First column is star id; 2nd, 3rd are x,y position

       -j     J2000 (FK5) output

       -m <number>
	      Set mode for output of LINEAR WCS coordinates:  0: x y linear 1: x units y units 2: x y linear units units

       -n <number>
	      Number of decimal places in output RA seconds

       -q <year>
	      Output equinox if not 2000 (-j) or 1950 (-b)

       -t     Output as tab-separated table

       -v     More descriptive output -z Use AIPS classic projections instead of WCSLIB

See Also
       sky2xy(1)

Author
       Doug Mink, SAO (dmink@cfa.harvard.edu)

6 July 2001							     WCSTools								 xy2sky(1)

Check Out this Related Man Page

WCSREMAP(1)							   User Commands						       WCSREMAP(1)

NAME

       wcsremap - AME

SYNOPSIS

       remap [-vf][-a rot][[-b][-j] ra dec][-i bits][-l num] file1.fit file2.fit ... filen.fit

DESCRIPTION

       Remap FITS or IRAF images into single FITS image using WCS

	      or  :  remap  [-vf][-a  rot][[-b][-j] ra dec][-i bits][-l num] @filelist -a: Output rotation angle in degrees (default 0) -b ra dec:
	      Output center in B1950 (FK4) RA and Dec -e long lat: Output center in ecliptic longitude and latitude -f file:  Use  WCS	from  this
	      file as output WCS -g long lat: Output center in galactic longitude and latitude -i num: Number of bits per output pixel (default is
	      input) -j ra dec: center in J2000 (FK5) RA and Dec -l num: Log every num rows of output image -m mode:  c  closest  pixel  (more	to
	      come)  -n  num:  integer	pixel  value  for blank pixel -o name: Name for output image -p secpix: Output plate scale in arcsec/pixel
	      (default =input) -s: Set BZERO and BSCALE in output file from input file -t: Number of samples per linear output	pixel  -u:  Delete
	      distortion  keywords from output file -v: Verbose -w type: Output WCS type (input is default) -x x y: Output image reference X and Y
	      coordinates (default is center) -y nx ny: Output image dimensions (default is first input image)

wcsremap 3.8.4							     June 2012							       WCSREMAP(1)
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