Name

       imcat - List catalog stars in FITS and IRAF image files

Synopsis

       imcat [options] FITS or IRAF file(s)

Description

       Search  given  catalog  within  area described by the world coordinate system in an image header.  May be
       called as imuac to search the USNO A 1.0 catalog, imusac to search the USNO SA 1.0 catalog, or  imgsc  to
       search the HST Guide Star Catalog.

Options

       -b [<RA> <Dec>]
              Output  in  B1950,  optional  new  image center in B1950 (FK4) RA and Dec to replace that in image
              header

       -c <name>
              Reference catalog (gsc(=HST GSC), ua2(=USNO-A2.0), TMC(=2MASS  Point  Source  Catalog),  gsc2(=GSC
              II), ub1(=USNO-B1.0), local file, etc.)

       -d     Output RA,Dec positions in fractional degrees

       -e     Output in ecliptic longitude and latitude

       -g     Output in galactic longitude and latitude

       -h     Print heading, else do not

       -i     Print name instead of number in region file

       -j [<RA> <Dec>]
              Output  in  J2000,  optional  new  image center in J2000 (FK5) RA and Dec to replace that in image
              header

       -k <keyword>
              Add this keyword to output from tab table search

       -m [<bright magnitude>] <faint magnitude>
              Limiting catalog magnitude(s) (default none, bright -2 if only faint is given)

       -n <num>
              Number of brightest stars to print

       -o <type>
              Set HST Guide Star object class to print (0=stars, 3=nonstars, -1=all, -2=band)

       -p <scale>
              Initial plate scale in arcsec per pixel (default from file)

       -q <c|d|o|s|x|v|+>
              Write SAOimage region file with this shape, o=circle, s=square, d=diamond, +=cross, and x=X,  with
              the  radius  scaled  with  magnitude  unless  specified with a -r command line entry. v will cause
              stellar Guide Stars to plot with a + and nonstellar Guide Stars to plot with an x. If character is
              is preceded by p, the size specified by the -r command is assumed to be in pixels, not arcseconds.
              A p alone specifies a circle in pixels.

       -r <radius>
              Write SAOimage region file with shapes (default CIRCLE) of this radius in arcseconds. SAOimage can
              then  read  this  file, with will have positions and radii in pixels and plot it over an image. If
              the radius is specified as zero, the output radii will scale between 5 and dim/100 over the  range
              of  magnitudes of sources found in the image area. If the -q option is specified with a 'p' in it,
              this number is assumed to be in pixels instead of arcseconds.

       -s d|m|n|p|r|x|y
              Sort by (d)eclination, (m)agnitude, (n)o sort, (p)distance from center, (r)ight  ascension,  image
              (x) or (y).

       -t     Tab table to standard output as well as file

       -u num USNO catalog single plate number to accept

       -v     Verbose listing of processing intermediate results

       -w     Write tab table output file imagename.cat

       -x x y X and Y coordinates of reference pixel (default is CRPIXn or center of image)

       -y epoch
              Epoch of image for proper motions

       -z     Use  AIPS  classic  projections  instead  of  WCSLIB; use CD matrix or CDELT instead of polynomial
              solution.

See Also

       scat()

Web Page

       http://tdc-www.harvard.edu/software/wcstools/imcat/

Author

       Jessica Mink, SAO (jmink@cfa.harvard.edu)