Index: trunk/psastro/src/psastro.h
===================================================================
--- trunk/psastro/src/psastro.h	(revision 23688)
+++ trunk/psastro/src/psastro.h	(revision 23810)
@@ -45,4 +45,19 @@
 } pmLumFunc;
 #endif
+
+/**
+ * this structure defines the parameters to describe a ghost
+ */
+typedef struct {
+    psPlane *srcFP;			///< location in FPA coords of the source star
+    psPlane *FP;			///< location in FPA coords of the ghost center
+    psPlane *chip;			///< location in chip coords of the ghost center
+    double Mag;				///< instrumental magnitude of source star
+    psEllipseAxes inner;		///< inner elliptical annulus boundary
+    psEllipseAxes outer;		///< outer elliptical annulus boundary
+} psastroGhost;
+
+psastroGhost     *psastroGhostAlloc (void);
+bool              psastroLoadGhosts (pmConfig *config);
 
 bool              psastroDataSave (pmConfig *config, psMetadata *stats);
@@ -131,12 +146,27 @@
 bool 		  psastroZeroPointFromRecipe (float *zeropt, float *exptime, pmFPA *fpa, psMetadata *recipe);
 
+// masking functions
+pmCell           *pmCellInChip (pmChip *chip, float x, float y);
+bool 		  pmCellCoordsForChip (float *xCell, float *yCell, pmCell *cell, float xChip, float yChip);
+bool 		  pmChipCoordsForCell (float *xChip, float *yChip, pmCell *cell, float xCell, float yCell);
+		  
+bool 		  psastroMaskCircle (psImage *mask, psImageMaskType value, float x0, float y0, float dX, float dY);
+bool 		  psastroMaskEllipse (psImage *mask, psImageMaskType value, float x0, float y0, psEllipseAxes axes);
+bool 		  psastroMaskEllipticalAnnulus (psImage *mask, psImageMaskType value, float x0, float y0, psEllipseAxes eInner, psEllipseAxes eOuter);
+		  
+bool 		  psastroMaskBox (psImage *mask, psImageMaskType value, float x0, float y0, float dL, float dW, float theta);
+void 		  psastroMaskLine (psImage *mask, psImageMaskType value, double x1, double y1, double x2, double y2, int dW);
+void 		  psastroMaskLineBresen (psImage *mask, psImageMaskType value, int X1, int Y1, int X2, int Y2, int dW, int swapcoords);
+void 		  psastroMaskRectangle (psImage *mask, psImageMaskType value, int x0, int y0, int x1, int y1);
+
+pmChip           *psastroFindChip (double *xChip, double *yChip, pmFPA *fpa, double xFPA, double yFPA);
+bool 		  psastroChipBounds (pmFPA *fpa);
+
 // psastroExtract functions
 bool 		  psastroExtractAnalysis (pmConfig *config);
 bool 		  psastroExtractStars (pmConfig *config);
 bool 		  psastroExtractGhosts (pmConfig *config);
-pmChip           *psastroExtractFindChip (float *xChip, float *yChip, pmFPA *fpa, float xFPA, float yFPA);
-bool 		  psastroExtractChipBounds (pmFPA *fpa);
 
-psImage          *psastroExtractStar (psImage *input, float x, float y, float dX, float dY);
+psImage          *psastroExtractStar (psImage *input, double x, double y, double dX, double dY);
 bool 		  psastroExtractParseCamera (pmConfig *config);
 bool 		  psastroExtractDataLoad (pmConfig *config);