Index: /trunk/psModules/src/objects/Makefile.am
===================================================================
--- /trunk/psModules/src/objects/Makefile.am	(revision 20740)
+++ /trunk/psModules/src/objects/Makefile.am	(revision 20741)
@@ -35,4 +35,5 @@
      pmSourceIO_PS1_DEV_0.c \
      pmSourceIO_PS1_DEV_1.c \
+     pmSourceIO_PS1_CAL_0.c \
      pmSourcePlots.c \
      pmSourcePlotPSFModel.c \
Index: /trunk/psModules/src/objects/pmSourceIO.c
===================================================================
--- /trunk/psModules/src/objects/pmSourceIO.c	(revision 20740)
+++ /trunk/psModules/src/objects/pmSourceIO.c	(revision 20741)
@@ -3,6 +3,6 @@
  *  @author EAM, IfA
  *
- *  @version $Revision: 1.66 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2008-10-03 02:11:48 $
+ *  @version $Revision: 1.67 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2008-11-14 02:11:45 $
  *
  *  Copyright 2004 Maui High Performance Computing Center, University of Hawaii
@@ -485,12 +485,21 @@
                 status = pmSourcesWrite_PS1_DEV_1 (file->fits, sources, file->header, outhead, dataname, xsrcname);
             }
+            if (!strcmp (exttype, "PS1_CAL_0")) {
+                status = pmSourcesWrite_PS1_CAL_0 (file->fits, readout, sources, file->header, outhead, dataname, xsrcname);
+            }
             if (xsrcname) {
               if (!strcmp (exttype, "PS1_DEV_1")) {
-                status = pmSourcesWrite_PS1_DEV_1_XSRC (file->fits, sources, xsrcname, recipe);
+		  status = pmSourcesWrite_PS1_DEV_1_XSRC (file->fits, sources, xsrcname, recipe);
+              }
+              if (!strcmp (exttype, "PS1_CAL_0")) {
+		  status = pmSourcesWrite_PS1_CAL_0_XSRC (file->fits, readout, sources, file->header, xsrcname, recipe);
               }
             }
             if (xfitname) {
               if (!strcmp (exttype, "PS1_DEV_1")) {
-                status = pmSourcesWrite_PS1_DEV_1_XFIT (file->fits, sources, xfitname);
+		  status = pmSourcesWrite_PS1_DEV_1_XFIT (file->fits, sources, xfitname);
+              }
+              if (!strcmp (exttype, "PS1_CAL_0")) {
+		  status = pmSourcesWrite_PS1_CAL_0_XFIT (file->fits, readout, sources, file->header, xfitname);
               }
             }
@@ -915,4 +924,7 @@
                 sources = pmSourcesRead_PS1_DEV_1 (file->fits, hdu->header);
             }
+            if (!strcmp (exttype, "PS1_CAL_)")) {
+                sources = pmSourcesRead_PS1_CAL_0 (file->fits, hdu->header);
+            }
         }
 
Index: /trunk/psModules/src/objects/pmSourceIO.h
===================================================================
--- /trunk/psModules/src/objects/pmSourceIO.h	(revision 20740)
+++ /trunk/psModules/src/objects/pmSourceIO.h	(revision 20741)
@@ -4,6 +4,6 @@
  * @author EAM, IfA; GLG, MHPCC
  *
- * @version $Revision: 1.18 $ $Name: not supported by cvs2svn $
- * @date $Date: 2008-07-17 22:38:15 $
+ * @version $Revision: 1.19 $ $Name: not supported by cvs2svn $
+ * @date $Date: 2008-11-14 02:11:45 $
  * Copyright 2004 Maui High Performance Computing Center, University of Hawaii
  *
@@ -30,4 +30,8 @@
 bool pmSourcesWrite_PS1_DEV_1_XFIT (psFits *fits, psArray *sources, char *extname);
 
+bool pmSourcesWrite_PS1_CAL_0 (psFits *fits, pmReadout *readout, psArray *sources, psMetadata *imageHeader, psMetadata *tableHeader, char *extname, char *xsrcname);
+bool pmSourcesWrite_PS1_CAL_0_XSRC (psFits *fits, pmReadout *readout, psArray *sources, psMetadata *imageHeader, char *extname, psMetadata *recipe);
+bool pmSourcesWrite_PS1_CAL_0_XFIT (psFits *fits, pmReadout *readout, psArray *sources, psMetadata *imageHeader, char *extname);
+
 bool pmSource_CMF_WritePHU (const pmFPAview *view, pmFPAfile *file, pmConfig *config);
 
@@ -37,4 +41,5 @@
 psArray *pmSourcesRead_PS1_DEV_0 (psFits *fits, psMetadata *header);
 psArray *pmSourcesRead_PS1_DEV_1 (psFits *fits, psMetadata *header);
+psArray *pmSourcesRead_PS1_CAL_0 (psFits *fits, psMetadata *header);
 
 bool pmSourcesWritePSFs (psArray *sources, char *filename);
Index: /trunk/psModules/src/objects/pmSourceIO_PS1_CAL_0.c
===================================================================
--- /trunk/psModules/src/objects/pmSourceIO_PS1_CAL_0.c	(revision 20741)
+++ /trunk/psModules/src/objects/pmSourceIO_PS1_CAL_0.c	(revision 20741)
@@ -0,0 +1,683 @@
+/** @file  pmSourceIO.c
+ *
+ *  @author EAM, IfA
+ *
+ *  @version $Revision: 1.1 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2008-11-14 02:11:45 $
+ *
+ *  Copyright 2004 Maui High Performance Computing Center, University of Hawaii
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <math.h>
+#include <string.h>
+#include <pslib.h>
+
+#include "pmConfig.h"
+#include "pmDetrendDB.h"
+
+#include "pmHDU.h"
+#include "pmFPA.h"
+#include "pmFPALevel.h"
+#include "pmFPAview.h"
+#include "pmFPAfile.h"
+
+#include "pmPeaks.h"
+#include "pmMoments.h"
+#include "pmGrowthCurve.h"
+#include "pmResiduals.h"
+#include "pmTrend2D.h"
+#include "pmPSF.h"
+#include "pmModel.h"
+#include "pmSource.h"
+#include "pmModelClass.h"
+#include "pmSourceIO.h"
+
+// panstarrs-style FITS table output (header + table in 1st extension)
+// this format consists of a header derived from the image header
+// followed by a zero-size matrix, followed by the table data
+
+// this output format is valid for psphot analysis of an image, and does not include calibrated
+// values derived in the DVO database.
+// XXX how do I generate the source tables which I need to send to PSPS?
+
+bool pmSourcesWrite_PS1_CAL_0 (psFits *fits, pmReadout *readout, psArray *sources, psMetadata *imageHeader,
+                               psMetadata *tableHeader, char *extname, char *xsrcname)
+{
+    PS_ASSERT_PTR_NON_NULL(fits, false);
+    PS_ASSERT_PTR_NON_NULL(sources, false);
+    PS_ASSERT_PTR_NON_NULL(extname, false);
+
+    psArray *table;
+    psMetadata *row;
+    int i;
+    psF32 *PAR, *dPAR;
+    psEllipseAxes axes;
+    psF32 xPos, yPos;
+    psF32 xErr, yErr;
+    psF32 errMag, chisq;
+
+    pmChip *chip = readout->parent->parent;
+    pmFPA  *fpa  = chip->parent;
+    if (!chip->toFPA || !fpa->toTPA || !fpa->toSky) {
+	psWarning ("astrometry calibration is missing, no calibrated coords");
+    }
+
+    bool status1 = false;
+    bool status2 = false;
+    float magOffset = NAN;
+    float exptime = psMetadataLookupF32 (&status1, fpa->concepts, "FPA.EXPOSURE");
+    float zeropt  = psMetadataLookupF32 (&status2, imageHeader, "ZPT_OBS");
+    if (!status1 || !status2 || (exptime == 0.0)) {
+	psWarning ("exposure time or measured zero point not found for a readout, no calibrated mags");
+    } else {
+	magOffset = zeropt + 2.5*log10(exptime);
+    }
+
+    // let's write these out in S/N order
+    sources = psArraySort (sources, pmSourceSortBySN);
+
+    table = psArrayAllocEmpty (sources->n);
+
+    // we write out PSF-fits for all sources, regardless of quality.  the source flags tell us the state
+    for (i = 0; i < sources->n; i++) {
+        pmSource *source = (pmSource *) sources->data[i];
+	if (source->seq == -1) {
+	    source->seq = i;
+	}
+
+        // no difference between PSF and non-PSF model
+        pmModel *model = source->modelPSF;
+
+        if (model != NULL) {
+            PAR = model->params->data.F32;
+            dPAR = model->dparams->data.F32;
+            xPos = PAR[PM_PAR_XPOS];
+            yPos = PAR[PM_PAR_YPOS];
+            xErr = dPAR[PM_PAR_XPOS];
+            yErr = dPAR[PM_PAR_YPOS];
+	    if (isfinite(PAR[PM_PAR_SXX]) && isfinite(PAR[PM_PAR_SXX]) && isfinite(PAR[PM_PAR_SXX])) {
+		axes = pmPSF_ModelToAxes (PAR, 20.0);
+	    } else {
+		axes.major = NAN;
+		axes.minor = NAN;
+		axes.theta = NAN;
+	    }
+	    chisq = model->chisq;
+
+	    // need to determine the PSF photometry error: source->errMag is the error on the 'best' model mag.
+	    errMag = model->dparams->data.F32[PM_PAR_I0] / model->params->data.F32[PM_PAR_I0];
+        } else {
+            xPos = source->peak->xf;
+            yPos = source->peak->yf;
+            xErr = source->peak->dx;
+            yErr = source->peak->dy;
+            axes.major = NAN;
+            axes.minor = NAN;
+            axes.theta = NAN;
+	    chisq = NAN;
+	    errMag = NAN;
+        }
+
+	float calMag = source->psfMag + magOffset;
+        float peakMag = (source->peak->flux > 0) ? -2.5*log10(source->peak->flux) : NAN;
+        psS16 nImageOverlap = 1;
+
+	// generate RA,DEC
+	psPlane ptCH, ptFP, ptTP;
+	psSphere ptSky;
+
+	ptCH.x = xPos;
+	ptCH.y = yPos;
+	if (chip->toFPA && fpa->toTPA && fpa->toSky) {
+	    psPlaneTransformApply (&ptFP, chip->toFPA, &ptCH);
+	    psPlaneTransformApply (&ptTP, fpa->toTPA, &ptFP);
+	    psDeproject (&ptSky, &ptTP, fpa->toSky);
+	} else {
+	    ptSky.r = NAN;
+	    ptSky.d = NAN;
+	}
+
+        row = psMetadataAlloc ();
+        psMetadataAdd (row, PS_LIST_TAIL, "IPP_IDET",         PS_DATA_U32, "IPP detection identifier index",             source->seq);
+        psMetadataAdd (row, PS_LIST_TAIL, "RA_PSF",           PS_DATA_F32, "PSF RA coordinate (degrees)",                ptSky.r*PS_DEG_RAD);
+        psMetadataAdd (row, PS_LIST_TAIL, "DEC_PSF",          PS_DATA_F32, "PSF DEC coordinate (degrees)",               ptSky.d*PS_DEG_RAD);
+	// XXX need to do the error propagation correctly..
+        // psMetadataAdd (row, PS_LIST_TAIL, "RA_PSF_SIG",       PS_DATA_F32, "Sigma of PSF fit RA",                     dRA);
+        // psMetadataAdd (row, PS_LIST_TAIL, "DEC_PSF_SIG",      PS_DATA_F32, "Sigma of PSF fit DEC",                    dDEC);
+
+        psMetadataAdd (row, PS_LIST_TAIL, "X_PSF",            PS_DATA_F32, "PSF x coordinate",                           xPos);
+        psMetadataAdd (row, PS_LIST_TAIL, "Y_PSF",            PS_DATA_F32, "PSF y coordinate",                           yPos);
+        psMetadataAdd (row, PS_LIST_TAIL, "X_PSF_SIG",        PS_DATA_F32, "Sigma in PSF x coordinate",                  xErr);
+        psMetadataAdd (row, PS_LIST_TAIL, "Y_PSF_SIG",        PS_DATA_F32, "Sigma in PSF y coordinate",                  yErr);
+        psMetadataAdd (row, PS_LIST_TAIL, "CAL_PSF_MAG",      PS_DATA_F32, "Calibrated Magnitude from PSF Fit",          calMag);
+        psMetadataAdd (row, PS_LIST_TAIL, "CAL_PSF_MAG_SIG",  PS_DATA_F32, "Calibrated Magnitude Error",                 errMag);
+        psMetadataAdd (row, PS_LIST_TAIL, "PSF_INST_MAG",     PS_DATA_F32, "PSF fit instrumental magnitude",             source->psfMag);
+        psMetadataAdd (row, PS_LIST_TAIL, "PSF_INST_MAG_SIG", PS_DATA_F32, "Sigma of PSF instrumental magnitude",        errMag);
+        psMetadataAdd (row, PS_LIST_TAIL, "PEAK_FLUX_AS_MAG", PS_DATA_F32, "Peak flux expressed as magnitude",           peakMag);
+        psMetadataAdd (row, PS_LIST_TAIL, "SKY",              PS_DATA_F32, "Sky level",                                  source->sky);
+        psMetadataAdd (row, PS_LIST_TAIL, "SKY_SIGMA",        PS_DATA_F32, "Sigma of sky level",                         source->skyErr);
+
+        psMetadataAdd (row, PS_LIST_TAIL, "PSF_CHISQ",        PS_DATA_F32,  "Chisq of PSF-fit",                          chisq);
+        psMetadataAdd (row, PS_LIST_TAIL, "CR_NSIGMA",        PS_DATA_F32,  "Nsigma deviations from PSF to CF",          source->crNsigma);
+        psMetadataAdd (row, PS_LIST_TAIL, "EXT_NSIGMA",       PS_DATA_F32,  "Nsigma deviations from PSF to EXT",         source->extNsigma);
+
+	// EXT_NSIGMA will be NAN if: 1) contour ellipse is imaginary; 2) source is not
+	// subtracted
+
+	// CR_NSIGMA will be NAN if: 1) source is not subtracted; 2) source is on the image
+	// edge; 3) any pixels in the 3x3 peak region are masked; 
+
+        // XXX these should be major and minor, not 'x' and 'y'
+        psMetadataAdd (row, PS_LIST_TAIL, "PSF_WIDTH_X",      PS_DATA_F32, "PSF width in x coordinate",                  axes.major);
+        psMetadataAdd (row, PS_LIST_TAIL, "PSF_WIDTH_Y",      PS_DATA_F32, "PSF width in y coordinate",                  axes.minor);
+        psMetadataAdd (row, PS_LIST_TAIL, "PSF_THETA",        PS_DATA_F32, "PSF orientation angle",                      axes.theta);
+        psMetadataAdd (row, PS_LIST_TAIL, "PSF_QF",           PS_DATA_F32, "PSF coverage/quality factor",                source->pixWeight);
+
+        // XXX not sure how to get this : need to load Nimages with weight?
+        psMetadataAdd (row, PS_LIST_TAIL, "N_FRAMES",         PS_DATA_U16, "Number of frames overlapping source center", nImageOverlap);
+        psMetadataAdd (row, PS_LIST_TAIL, "FLAGS",            PS_DATA_U16, "psphot analysis flags",                      source->mode);
+
+        psArrayAdd (table, 100, row);
+        psFree (row);
+    }
+
+    if (table->n == 0) {
+        psFitsWriteBlank (fits, tableHeader, extname);
+        psFree (table);
+        return true;
+    }
+
+    psTrace ("pmFPAfile", 5, "writing ext data %s\n", extname);
+    if (!psFitsWriteTable (fits, tableHeader, table, extname)) {
+        psError(PS_ERR_IO, false, "writing ext data %s\n", extname);
+        psFree(table);
+        return false;
+    }
+    psFree (table);
+
+    return true;
+}
+
+// read in a readout from the fits file
+psArray *pmSourcesRead_PS1_CAL_0 (psFits *fits, psMetadata *header)
+{
+    PS_ASSERT_PTR_NON_NULL(fits, false);
+    PS_ASSERT_PTR_NON_NULL(header, false);
+
+    bool status;
+    psF32 *PAR, *dPAR;
+    psEllipseAxes axes;
+
+    // define PSF model type
+    int modelType = pmModelClassGetType ("PS_MODEL_GAUSS");
+
+    char *PSF_NAME = psMetadataLookupStr (&status, header, "PSF_NAME");
+    if (PSF_NAME != NULL) {
+        modelType = pmModelClassGetType (PSF_NAME);
+    }
+    assert (modelType > -1);
+
+    // XXX need to look up the XSRCNAME entries
+
+    // validate a single row of the table (must match SMP)
+
+    // XXX test return values
+
+    // XXX we have a memory problem, which is illustrated here: if I allocate the sources array
+    // (line 1) before freeing the table, the data is not really freed (but not a leak?)  if I
+    // allocate the sources array *after* freeing the table, the data is actually freed
+    // psArray *fooSources = psArrayAllocEmpty (10000);
+    // psFree (table);
+    // return (fooSources);
+
+
+    // We get the size of the table, and allocate the array of sources first because the table is large and
+    // ephemeral --- when the table gets blown away, whatever is allocated after the table is read.  In fact,
+    // it's better to read the table row by row.
+    long numSources = psFitsTableSize(fits); // Number of sources in table
+    psArray *sources = psArrayAlloc(numSources); // Array of sources, to return
+
+    // convert the table to the pmSource entries
+    // XXX need to chooose PSF vs EXT, based on type?
+    for (int i = 0; i < numSources; i++) {
+        psMetadata *row = psFitsReadTableRow(fits, i); // Table row
+
+        pmSource *source = pmSourceAlloc ();
+        pmModel *model = pmModelAlloc (modelType);
+        source->modelPSF  = model;
+        source->type = PM_SOURCE_TYPE_STAR;
+
+        // NOTE: A SEGV here because "model" is NULL is probably caused by not initialising the models.
+        PAR = model->params->data.F32;
+        dPAR = model->dparams->data.F32;
+
+        source->seq       = psMetadataLookupU32 (&status, row, "IPP_IDET");
+        PAR[PM_PAR_XPOS]  = psMetadataLookupF32 (&status, row, "X_PSF");
+        PAR[PM_PAR_YPOS]  = psMetadataLookupF32 (&status, row, "Y_PSF");
+        dPAR[PM_PAR_XPOS] = psMetadataLookupF32 (&status, row, "X_PSF_SIG");
+        dPAR[PM_PAR_YPOS] = psMetadataLookupF32 (&status, row, "Y_PSF_SIG");
+        axes.major        = psMetadataLookupF32 (&status, row, "PSF_WIDTH_X");
+        axes.minor        = psMetadataLookupF32 (&status, row, "PSF_WIDTH_Y");
+        axes.theta        = psMetadataLookupF32 (&status, row, "PSF_THETA");
+
+        PAR[PM_PAR_SKY]   = psMetadataLookupF32 (&status, row, "SKY");
+        dPAR[PM_PAR_SKY]  = psMetadataLookupF32 (&status, row, "SKY_SIGMA");
+        source->sky = PAR[PM_PAR_SKY];
+        source->skyErr = dPAR[PM_PAR_SKY];
+
+        // XXX use these to determine PAR[PM_PAR_I0]?
+        source->psfMag    = psMetadataLookupF32 (&status, row, "PSF_INST_MAG");
+        source->errMag    = psMetadataLookupF32 (&status, row, "PSF_INST_MAG_SIG");
+	PAR[PM_PAR_I0]    = (isfinite(source->psfMag)) ? pow(10.0, -0.4*source->psfMag) : NAN;
+	dPAR[PM_PAR_I0]   = (isfinite(source->psfMag)) ? PAR[PM_PAR_I0] * source->errMag : NAN;
+
+        pmPSF_AxesToModel (PAR, axes);
+
+        float lflux = psMetadataLookupF32 (&status, row, "PEAK_FLUX_AS_MAG");
+        float flux = (isfinite(lflux)) ? pow(10.0, -0.4*lflux) : NAN;
+        source->peak = pmPeakAlloc(PAR[PM_PAR_XPOS], PAR[PM_PAR_YPOS], flux, PM_PEAK_LONE);
+        source->peak->flux = flux;
+
+        source->pixWeight = psMetadataLookupF32 (&status, row, "PSF_QF");
+
+	// note that some older versions used PSF_PROBABILITY: this was not well defined.
+        model->chisq      = psMetadataLookupF32 (&status, row, "PSF_CHISQ");
+        source->crNsigma  = psMetadataLookupF32 (&status, row, "CR_NSIGMA");
+        source->extNsigma = psMetadataLookupF32 (&status, row, "EXT_NSIGMA");
+
+        source->mode      = psMetadataLookupU16 (&status, row, "FLAGS");
+        assert (status);
+
+        // XXX other values saved but not loaded?
+        // psMetadataLookupS64 (&status, row, "IPP_IDET");
+        // psMetadataLookupF32 (&status, row, "N_FRAMES");
+
+        sources->data[i] = source;
+        psFree(row);
+    }
+
+    return sources;
+}
+
+bool pmSourcesWrite_PS1_CAL_0_XSRC (psFits *fits, pmReadout *readout, psArray *sources, psMetadata *imageHeader, char *extname, psMetadata *recipe)
+{
+
+    bool status;
+    psArray *table;
+    psMetadata *row;
+    psF32 *PAR, *dPAR;
+    psF32 xPos, yPos;
+    psF32 xErr, yErr;
+
+    pmChip *chip = readout->parent->parent;
+    pmFPA  *fpa  = chip->parent;
+    if (!chip->toFPA || !fpa->toTPA || !fpa->toSky) {
+	psWarning ("astrometry calibration is missing, no calibrated coords");
+    }
+
+    bool calMags = false;
+    bool status1 = false;
+    bool status2 = false;
+    float magOffset = NAN;
+    float exptime = psMetadataLookupF32 (&status1, fpa->concepts, "FPA.EXPOSURE");
+    float zeropt  = psMetadataLookupF32 (&status2, imageHeader, "ZPT_OBS");
+    if (!status1 || !status2 || (exptime == 0.0)) {
+	psWarning ("exposure time or measured zero point not found for a readout, no calibrated mags");
+    } else {
+	magOffset = zeropt + 2.5*log10(exptime);
+	calMags = true;
+    }
+
+    // create a header to hold the output data
+    psMetadata *outhead = psMetadataAlloc ();
+
+    // write the links to the image header
+    psMetadataAddStr (outhead, PS_LIST_TAIL, "EXTNAME", PS_META_REPLACE, "xsrc table extension", extname);
+
+    // let's write these out in S/N order
+    sources = psArraySort (sources, pmSourceSortBySN);
+
+    table = psArrayAllocEmpty (sources->n);
+
+    // which extended source analyses should we perform?
+    bool doPetrosian    = psMetadataLookupBool (&status, recipe, "EXTENDED_SOURCE_PETROSIAN");
+    bool doIsophotal    = psMetadataLookupBool (&status, recipe, "EXTENDED_SOURCE_ISOPHOTAL");
+    bool doAnnuli       = psMetadataLookupBool (&status, recipe, "EXTENDED_SOURCE_ANNULI");
+    bool doKron         = psMetadataLookupBool (&status, recipe, "EXTENDED_SOURCE_KRON");
+
+    psVector *radialBinsLower = psMetadataLookupPtr (&status, recipe, "RADIAL.ANNULAR.BINS.LOWER");
+    psVector *radialBinsUpper = psMetadataLookupPtr (&status, recipe, "RADIAL.ANNULAR.BINS.UPPER");
+    assert (radialBinsLower->n == radialBinsUpper->n);
+
+    // we write out all sources, regardless of quality.  the source flags tell us the state
+    for (int i = 0; i < sources->n; i++) {
+	// skip source if it is not a ext sourc
+	// XXX we have two places that extended source parameters are measured:
+	// psphotExtendedSources, which measures the aperture-like parameters and (potentially) the psf-convolved extended source models,
+	// psphotFitEXT, which does the simple extended source model fit (not psf-convolved)
+	// should we require both?
+
+	pmSource *source = sources->data[i];
+
+	// skip sources without measurements
+	if (source->extpars == NULL) continue;
+
+	// we require a PSF model fit (ignore the real crud)
+	pmModel *model = source->modelPSF;
+	if (model == NULL) continue;
+
+	// XXX I need to split the extended models from the extended aperture measurements
+	PAR = model->params->data.F32;
+	dPAR = model->dparams->data.F32;
+	xPos = PAR[PM_PAR_XPOS];
+	yPos = PAR[PM_PAR_YPOS];
+	xErr = dPAR[PM_PAR_XPOS];
+	yErr = dPAR[PM_PAR_YPOS];
+
+	// generate RA,DEC
+	psPlane ptCH, ptFP, ptTP;
+	psSphere ptSky;
+
+	ptCH.x = xPos;
+	ptCH.y = yPos;
+	if (chip->toFPA && fpa->toTPA && fpa->toSky) {
+	    psPlaneTransformApply (&ptFP, chip->toFPA, &ptCH);
+	    psPlaneTransformApply (&ptTP, fpa->toTPA, &ptFP);
+	    psDeproject (&ptSky, &ptTP, fpa->toSky);
+	} else {
+	    ptSky.r = NAN;
+	    ptSky.d = NAN;
+	}
+
+        row = psMetadataAlloc ();
+
+        // XXX we are not writing out the mode (flags) or the type (psf, ext, etc)
+        psMetadataAdd (row, PS_LIST_TAIL, "IPP_IDET",         PS_DATA_U32, "IPP detection identifier index",             source->seq);
+        psMetadataAdd (row, PS_LIST_TAIL, "RA_EXT",           PS_DATA_F32, "EXT model RA (degrees)",                     ptSky.r*PS_DEG_RAD);
+        psMetadataAdd (row, PS_LIST_TAIL, "DEC_EXT",          PS_DATA_F32, "EXT model DEC (degrees)",                    ptSky.d*PS_DEG_RAD);
+
+        psMetadataAdd (row, PS_LIST_TAIL, "X_EXT",            PS_DATA_F32, "EXT model x coordinate",                     xPos);
+        psMetadataAdd (row, PS_LIST_TAIL, "Y_EXT",            PS_DATA_F32, "EXT model y coordinate",                     yPos);
+        psMetadataAdd (row, PS_LIST_TAIL, "X_EXT_SIG",        PS_DATA_F32, "Sigma in EXT x coordinate",                  xErr);
+        psMetadataAdd (row, PS_LIST_TAIL, "Y_EXT_SIG",        PS_DATA_F32, "Sigma in EXT y coordinate",                  yErr);
+
+	// Petrosian measurements
+	// XXX insert header data: petrosian ref radius, flux ratio
+	if (doPetrosian) {
+	    pmSourcePetrosianValues *petrosian = source->extpars->petrosian;
+	    if (petrosian) {
+		if (calMags) {
+		    psMetadataAdd (row, PS_LIST_TAIL, "PETRO_MAG_CAL",    PS_DATA_F32, "Petrosian Magnitude (calibrated)", petrosian->mag + magOffset);
+		} else {
+		    psMetadataAdd (row, PS_LIST_TAIL, "PETRO_MAG_INST",   PS_DATA_F32, "Petrosian Magnitude (instrumental)", petrosian->mag);
+		}
+		psMetadataAdd (row, PS_LIST_TAIL, "PETRO_MAG_ERR",    PS_DATA_F32, "Petrosian Magnitude Error", petrosian->magErr);
+		psMetadataAdd (row, PS_LIST_TAIL, "PETRO_RADIUS",     PS_DATA_F32, "Petrosian Radius",          petrosian->rad);
+		psMetadataAdd (row, PS_LIST_TAIL, "PETRO_RADIUS_ERR", PS_DATA_F32, "Petrosian Radius Error",    petrosian->radErr);
+	    } else {
+		psMetadataAdd (row, PS_LIST_TAIL, "PETRO_MAG",        PS_DATA_F32, "Petrosian Magnitude",       NAN);
+		psMetadataAdd (row, PS_LIST_TAIL, "PETRO_MAG_ERR",    PS_DATA_F32, "Petrosian Magnitude Error", NAN);
+		psMetadataAdd (row, PS_LIST_TAIL, "PETRO_RADIUS",     PS_DATA_F32, "Petrosian Radius",          NAN);
+		psMetadataAdd (row, PS_LIST_TAIL, "PETRO_RADIUS_ERR", PS_DATA_F32, "Petrosian Radius Error",    NAN);
+	    }
+	} 
+
+	// Kron measurements
+	if (doKron) {
+	    pmSourceKronValues *kron = source->extpars->kron;
+	    if (kron) {
+		if (calMags) {
+		    psMetadataAdd (row, PS_LIST_TAIL, "KRON_MAG_CAL",  PS_DATA_F32, "Kron Magnitude",     kron->mag + magOffset);
+		} else {
+		    psMetadataAdd (row, PS_LIST_TAIL, "KRON_MAG_INST", PS_DATA_F32, "Kron Magnitude",     kron->mag);
+		}
+		psMetadataAdd (row, PS_LIST_TAIL, "KRON_MAG_ERR",    PS_DATA_F32, "Kron Magnitude Error", kron->magErr);
+		psMetadataAdd (row, PS_LIST_TAIL, "KRON_RADIUS",     PS_DATA_F32, "Kron Radius",          kron->rad);
+		psMetadataAdd (row, PS_LIST_TAIL, "KRON_RADIUS_ERR", PS_DATA_F32, "Kron Radius Error",    kron->radErr);
+	    } else {
+		psMetadataAdd (row, PS_LIST_TAIL, "KRON_MAG",        PS_DATA_F32, "Kron Magnitude",       NAN);
+		psMetadataAdd (row, PS_LIST_TAIL, "KRON_MAG_ERR",    PS_DATA_F32, "Kron Magnitude Error", NAN);
+		psMetadataAdd (row, PS_LIST_TAIL, "KRON_RADIUS",     PS_DATA_F32, "Kron Radius",          NAN);
+		psMetadataAdd (row, PS_LIST_TAIL, "KRON_RADIUS_ERR", PS_DATA_F32, "Kron Radius Error",    NAN);
+	    }
+	}
+
+	// Isophot measurements
+	// XXX insert header data: isophotal level
+	if (doIsophotal) {
+	    pmSourceIsophotalValues *isophot = source->extpars->isophot;
+	    if (isophot) {
+		if (calMags) {
+		    psMetadataAdd (row, PS_LIST_TAIL, "ISOPHOT_MAG_CAL",    PS_DATA_F32, "Isophot Magnitude (calibrated)",   isophot->mag + magOffset);
+		} else {
+		    psMetadataAdd (row, PS_LIST_TAIL, "ISOPHOT_MAG_INST",   PS_DATA_F32, "Isophot Magnitude (uncalibrated)", isophot->mag);
+		}
+		psMetadataAdd (row, PS_LIST_TAIL, "ISOPHOT_MAG_ERR",    PS_DATA_F32, "Isophot Magnitude Error", isophot->magErr);
+		psMetadataAdd (row, PS_LIST_TAIL, "ISOPHOT_RADIUS",     PS_DATA_F32, "Isophot Radius",          isophot->rad);
+		psMetadataAdd (row, PS_LIST_TAIL, "ISOPHOT_RADIUS_ERR", PS_DATA_F32, "Isophot Radius Error",    isophot->radErr);
+	    } else {
+		psMetadataAdd (row, PS_LIST_TAIL, "ISOPHOT_MAG",        PS_DATA_F32, "Isophot Magnitude",       NAN);
+		psMetadataAdd (row, PS_LIST_TAIL, "ISOPHOT_MAG_ERR",    PS_DATA_F32, "Isophot Magnitude Error", NAN);
+		psMetadataAdd (row, PS_LIST_TAIL, "ISOPHOT_RADIUS",     PS_DATA_F32, "Isophot Radius",          NAN);
+		psMetadataAdd (row, PS_LIST_TAIL, "ISOPHOT_RADIUS_ERR", PS_DATA_F32, "Isophot Radius Error",    NAN);
+	    }
+	}
+
+	// Flux Annuli
+	if (doAnnuli) {
+	    pmSourceAnnuli *annuli = source->extpars->annuli;
+	    if (annuli) {
+		psVector *fluxVal = annuli->flux;
+		psVector *fluxErr = annuli->fluxErr;
+		psVector *fluxVar = annuli->fluxVar;
+
+		for (int j = 0; j < fluxVal->n; j++) {
+		    char name[32];
+		    sprintf (name, "FLUX_VAL_R_%02d", j);
+		    psMetadataAdd (row, PS_LIST_TAIL, name, PS_DATA_F32, "flux value in annulus", fluxVal->data.F32[j]);
+		    sprintf (name, "FLUX_ERR_R_%02d", j);
+		    psMetadataAdd (row, PS_LIST_TAIL, name, PS_DATA_F32, "flux error in annulus", fluxErr->data.F32[j]);
+		    sprintf (name, "FLUX_VAR_R_%02d", j);
+		    psMetadataAdd (row, PS_LIST_TAIL, name, PS_DATA_F32, "flux stdev in annulus", fluxVar->data.F32[j]);
+		} 
+	    } else {
+		for (int j = 0; j < radialBinsLower->n; j++) {
+		    char name[32];
+		    sprintf (name, "FLUX_VAL_R_%02d", j);
+		    psMetadataAdd (row, PS_LIST_TAIL, name, PS_DATA_F32, "flux value in annulus", NAN);
+		    sprintf (name, "FLUX_ERR_R_%02d", j);
+		    psMetadataAdd (row, PS_LIST_TAIL, name, PS_DATA_F32, "flux error in annulus", NAN);
+		    sprintf (name, "FLUX_VAR_R_%02d", j);
+		    psMetadataAdd (row, PS_LIST_TAIL, name, PS_DATA_F32, "flux stdev in annulus", NAN);
+		} 
+	    }
+	}
+
+	psArrayAdd (table, 100, row);
+	psFree (row);
+    }
+
+    if (table->n == 0) {
+	psFitsWriteBlank (fits, outhead, extname);
+	psFree (outhead);
+	psFree (table);
+	return true;
+    }
+
+    psTrace ("pmFPAfile", 5, "writing ext data %s\n", extname);
+    if (!psFitsWriteTable (fits, outhead, table, extname)) {
+	psError(PS_ERR_IO, false, "writing ext data %s\n", extname);
+	psFree (outhead);
+	psFree(table);
+	return false;
+    }
+    psFree (outhead);
+    psFree (table);
+
+    return true;
+}
+
+bool pmSourcesWrite_PS1_CAL_0_XFIT (psFits *fits, pmReadout *readout, psArray *sources, psMetadata *imageHeader, char *extname)
+{
+
+    psArray *table;
+    psMetadata *row;
+    psF32 *PAR, *dPAR;
+    psEllipseAxes axes;
+    psF32 xPos, yPos;
+    psF32 xErr, yErr;
+    char name[64];
+
+    pmChip *chip = readout->parent->parent;
+    pmFPA  *fpa  = chip->parent;
+    if (!chip->toFPA || !fpa->toTPA || !fpa->toSky) {
+	psWarning ("astrometry calibration is missing, no calibrated coords");
+    }
+
+    bool status1 = false;
+    bool status2 = false;
+    float magOffset = NAN;
+    float exptime = psMetadataLookupF32 (&status1, fpa->concepts, "FPA.EXPOSURE");
+    float zeropt  = psMetadataLookupF32 (&status2, imageHeader, "ZPT_OBS");
+    if (!status1 || !status2 || (exptime == 0.0)) {
+	psWarning ("exposure time or measured zero point not found for a readout, no calibrated mags");
+    } else {
+	magOffset = zeropt + 2.5*log10(exptime);
+    }
+
+    // create a header to hold the output data
+    psMetadata *outhead = psMetadataAlloc ();
+
+    // write the links to the image header
+    psMetadataAddStr (outhead, PS_LIST_TAIL, "EXTNAME", PS_META_REPLACE, "xsrc table extension", extname);
+
+    // let's write these out in S/N order
+    sources = psArraySort (sources, pmSourceSortBySN);
+
+    // we are writing one row per model; we need to write out same number of columns for each row: find the max Nparams
+    int nParamMax = 0;
+    for (int i = 0; i < sources->n; i++) {
+	pmSource *source = sources->data[i];
+	if (source->modelFits == NULL) continue;
+	for (int j = 0; j < source->modelFits->n; j++) {
+	    pmModel *model = source->modelFits->data[j];
+	    assert (model);
+	    nParamMax = PS_MAX (nParamMax, model->params->n);
+	}
+    }
+
+    table = psArrayAllocEmpty (sources->n);
+
+    // we write out all sources, regardless of quality.  the source flags tell us the state
+    for (int i = 0; i < sources->n; i++) {
+
+	pmSource *source = sources->data[i];
+
+	// XXX if no model fits are saved, write out modelEXT?
+	if (source->modelFits == NULL) continue;
+
+	// We have multiple sources : need to flag the one used to subtract the light (the 'best' model)
+	for (int j = 0; j < source->modelFits->n; j++) {
+
+	    // choose the convolved EXT model, if available, otherwise the simple one
+	    pmModel *model = source->modelFits->data[j];
+	    assert (model);
+
+	    PAR = model->params->data.F32;
+	    dPAR = model->dparams->data.F32;
+	    xPos = PAR[PM_PAR_XPOS];
+	    yPos = PAR[PM_PAR_YPOS];
+	    xErr = dPAR[PM_PAR_XPOS];
+	    yErr = dPAR[PM_PAR_YPOS];
+
+	    axes = pmPSF_ModelToAxes (PAR, 20.0);
+
+	    // generate RA,DEC
+	    psPlane ptCH, ptFP, ptTP;
+	    psSphere ptSky;
+
+	    ptCH.x = xPos;
+	    ptCH.y = yPos;
+	    if (chip->toFPA && fpa->toTPA && fpa->toSky) {
+		psPlaneTransformApply (&ptFP, chip->toFPA, &ptCH);
+		psPlaneTransformApply (&ptTP, fpa->toTPA, &ptFP);
+		psDeproject (&ptSky, &ptTP, fpa->toSky);
+	    } else {
+		ptSky.r = NAN;
+		ptSky.d = NAN;
+	    }
+
+	    row = psMetadataAlloc ();
+
+	    // XXX we are not writing out the mode (flags) or the type (psf, ext, etc)
+	    psMetadataAddU32 (row, PS_LIST_TAIL, "IPP_IDET",         0, "IPP detection identifier index",             source->seq);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "RA_EXT",           0, "EXT model RA (degrees)",                     ptSky.r);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "DEC_EXT",          0, "EXT model DEC (degrees)",                    ptSky.d);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "X_EXT",            0, "EXT model x coordinate",                     xPos);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "Y_EXT",            0, "EXT model y coordinate",                     yPos);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "X_EXT_SIG",        0, "Sigma in EXT x coordinate",                  xErr);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "Y_EXT_SIG",        0, "Sigma in EXT y coordinate",                  yErr);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "EXT_CAL_MAG",      0, "EXT fit calibrated magnitude",               model->mag + magOffset);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "EXT_INST_MAG",     0, "EXT fit instrumental magnitude",             model->mag);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "EXT_INST_MAG_SIG", 0, "Sigma of PSF instrumental magnitude",        model->magErr);
+
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "NPARAMS",          0, "number of model parameters",                 model->params->n);
+	    psMetadataAddStr (row, PS_LIST_TAIL, "MODEL_TYPE",       0, "name of model",                              pmModelClassGetName (model->type));
+
+	    // XXX these should be major and minor, not 'x' and 'y'
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "EXT_WIDTH_MAJ",    0, "EXT width in x coordinate",                  axes.major);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "EXT_WIDTH_MIN",    0, "EXT width in y coordinate",                  axes.minor);
+	    psMetadataAddF32 (row, PS_LIST_TAIL, "EXT_THETA",        0, "EXT orientation angle",                      axes.theta);
+
+	    // write out the other generic parameters
+	    for (int k = 0; k < nParamMax; k++) {
+		if (k == PM_PAR_I0) continue;
+		if (k == PM_PAR_SKY) continue;
+		if (k == PM_PAR_XPOS) continue;
+		if (k == PM_PAR_YPOS) continue;
+		if (k == PM_PAR_SXX) continue;
+		if (k == PM_PAR_SXY) continue;
+		if (k == PM_PAR_SYY) continue;
+
+		snprintf (name, 64, "EXT_PAR_%02d", k);
+
+		if (k < model->params->n) {
+		    psMetadataAdd (row, PS_LIST_TAIL, name, PS_DATA_F32, "", model->params->data.F32[k]);
+		} else {
+		    psMetadataAddF32 (row, PS_LIST_TAIL, name, PS_DATA_F32, "", NAN);
+		}
+	    }
+
+	    // XXX other parameters which may be set.
+	    // XXX flag / value to define the model
+	    // XXX write out the model type, fit status flags
+
+	    psArrayAdd (table, 100, row);
+	    psFree (row);
+	}
+    }
+
+    if (table->n == 0) {
+	psFitsWriteBlank (fits, outhead, extname);
+	psFree (outhead);
+	psFree (table);
+	return true;
+    }
+
+    psTrace ("pmFPAfile", 5, "writing ext data %s\n", extname);
+    if (!psFitsWriteTable (fits, outhead, table, extname)) {
+	psError(PS_ERR_IO, false, "writing ext data %s\n", extname);
+	psFree (outhead);
+	psFree(table);
+	return false;
+    }
+    psFree (outhead);
+    psFree (table);
+    return true;
+}
