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/*** File libwcs/fortcat.c
*** February 16, 2001
*** By Doug Mink, dmink@cfa.harvard.edu
*** Harvard-Smithsonian Center for Astrophysics
*/
/* Fortran wrappers for subroutines which read astronomical catalogs
*
* Catalogs supported include: USNO-A2.0, USNO_SA2.0, ACT, Tycho 2, SAO
* TDC binary format (SAO, PPM, Yale Bright Star, IRAS Point Source Catalogs)
* SAO TDC ASCII format, and Starbase tab-delimited format
*
* For shell-level searches, use WCSTools scat, documented at
* http://tdc-www.harvard.edu/software/wcstools/scat/
*
* int catread_() Read catalog stars in specified region of the sky
* int catrnum_() Read catalog stars with specified numbers
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <sys/types.h>
#include "fitshead.h"
#include "vimoswcs.h"
#include "vimoswcscat.h"
/* default pathname for catalog, used if catalog file not found in current
working directory, but overridden by WCS_CATDIR environment variable */
char catdir[64]="/data/catalogs";
static struct StarCat **starcat; /* Catalog data structure */
/* CATREAD -- Read ASCII stars in specified region using ctgread() */
void
catread_ (catfile, distsort, cra, cdec, dra, ddec, drad,
csysout, eqout, epout, mag1, mag2, nsmax, nlog, nstars,
xnum, xra, xdec, xpra, xpdec, xmag, xmagb)
char *catfile; /* Name of reference star catalog file */
int distsort; /* 1 to sort stars by distance from center */
double cra; /* Search center J2000 right ascension in degrees */
double cdec; /* Search center J2000 declination in degrees */
double dra; /* Search half width in right ascension in degrees */
double ddec; /* Search half-width in declination in degrees */
double drad; /* Limiting separation in degrees (ignore if 0) */
char *csysout; /* Search coordinate system */
double eqout; /* Search coordinate equinox */
double epout; /* Proper motion epoch (0.0 for no proper motion) */
double mag1,mag2; /* Limiting magnitudes (none if equal) */
int nsmax; /* Maximum number of stars to be returned */
int nlog; /* Logging frequency */
int nstars; /* Number of catalog stars found */
double *xnum; /* Array of ID numbers (returned) */
double *xra; /* Array of right ascensions (returned) */
double *xdec; /* Array of declinations (returned) */
double *xpra; /* Array of right ascension proper motions (returned) */
double *xpdec; /* Array of declination proper motions (returned) */
double *xmag; /* Array of magnitudes (returned) */
double *xmagb; /* Array of second magnitudes (returned) */
{
int refcat; /* Catalog code from vimoswcscat.h */
int syscat; /* Coordinate system code from catalog */
double eqcat, epcat; /* Equinox and epoch of catalog */
char title[64]; /* Title of catalog */
char **tobj; /* Array of object names (ignored) */
int *tc; /* Array of fluxes (ignored) */
int nread; /* Number of stars read from catalog */
int sysout; /* Search coordinate system */
tc = NULL;
tobj = NULL;
refcat = RefCat (catfile, title, syscat, eqcat, epcat);
sysout = vimoswcscsys (csysout);
nread = ctgread (catfile, refcat, distsort, cra, cdec, dra, ddec, drad,
sysout, eqout, epout, mag1, mag2, nsmax, starcat,
xnum, xra, xdec, xpra, xpdec, xmag, xmagb, tc, tobj, nlog);
/* Return number of stars read or maximum, which ever is lower */
if (nread < nsmax)
nstars = nread;
else
nstars = nsmax;
return;
}
/* CATRNUM -- Read ASCII stars with specified numbers using ctgrnum() */
void
catrnum_ (catfile, nnum, csysout, eqout, epout, match, nlog,
xnum, xra, xdec, xpra, xpdec, xmag, xmagb)
char *catfile; /* Name of reference star catalog file */
int nnum; /* Number of stars to look for */
char *csysout; /* Search coordinate system */
double eqout; /* Search coordinate equinox */
double epout; /* Proper motion epoch (0.0 for no proper motion) */
int match; /* 1 to match star number exactly, else sequence num.*/
int nlog; /* Logging frequency */
double *xnum; /* Array of star numbers to look for */
double *xra; /* Array of right ascensions (returned) */
double *xdec; /* Array of declinations (returned) */
double *xpra; /* Array of right ascension proper motions (returned) */
double *xpdec; /* Array of declination proper motions (returned) */
double *xmag; /* Array of magnitudes (returned) */
double *xmagb; /* Array of second magnitudes (returned) */
{
int refcat; /* Catalog code from vimoswcscat.h */
int syscat; /* Coordinate system code from catalog */
double eqcat, epcat; /* Equinox and epoch of catalog */
char title[64]; /* Title of catalog */
int *tc; /* Array of fluxes (ignore) */
char **tobj; /* Array of object names (ignored) */
int sysout; /* Search coordinate system */
int nread; /* Number of stars read from catalog */
tc = NULL;
tobj = NULL;
sysout = vimoswcscsys (csysout);
refcat = RefCat (catfile, title, syscat, eqcat, epcat);
nread = ctgrnum (catfile,refcat, nnum,sysout,eqout,epout,match,starcat,
xnum,xra,xdec,xpra,xpdec,xmag,xmagb,tc,tobj,nlog);
return;
}
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