Index: trunk/ippconfig/megacam/camera.config
===================================================================
--- trunk/ippconfig/megacam/camera.config	(revision 15544)
+++ trunk/ippconfig/megacam/camera.config	(revision 15612)
@@ -138,21 +138,13 @@
                 FRINGE_STACK    STR     PPMERGE_FRINGE
 
-		# Generation of pixel masks from darks and flats
-		DARKMASK_PROCESS	STR	PPIMAGE_OBD
-		DARKMASK_RESID		STR	PPIMAGE_N
-		DARKMASK_VERIFY		STR	PPIMAGE_OBD
-		DARKMASK_STACK		STR	PPMERGE_MASK
-		FLATMASK_PROCESS	STR	PPIMAGE_OBDSF
-		FLATMASK_RESID		STR	PPIMAGE_N
-		FLATMASK_VERIFY		STR	PPIMAGE_OBDSF
-		FLATMASK_STACK		STR	PPMERGE_MASK
-		JPEG_BIN1_IMAGE_DARKMASK STR	PPIMAGE_J1_IMAGE_M
-		JPEG_BIN2_IMAGE_DARKMASK STR	PPIMAGE_J2_IMAGE_M
-		JPEG_BIN1_IMAGE_FLATMASK STR	PPIMAGE_J1_IMAGE_M
-		JPEG_BIN2_IMAGE_FLATMASK STR	PPIMAGE_J2_IMAGE_M
-		JPEG_BIN1_RESID_DARKMASK STR	PPIMAGE_J1_RESID_M
-		JPEG_BIN2_RESID_DARKMASK STR	PPIMAGE_J2_RESID_M
-		JPEG_BIN1_RESID_FLATMASK STR	PPIMAGE_J1_RESID_M
-		JPEG_BIN2_RESID_FLATMASK STR	PPIMAGE_J2_RESID_M
+		# Make masks from flats
+		MASK_PROCESS		STR	PPIMAGE_OBDSF
+		MASK_RESID		STR	PPIMAGE_N
+		MASK_VERIFY		STR	PPIMAGE_OBDSF
+		MASK_STACK		STR	PPMERGE_MASK
+		JPEG_BIN1_IMAGE_MASK	STR	PPIMAGE_J1_IMAGE_M
+		JPEG_BIN2_IMAGE_MASK	STR	PPIMAGE_J2_IMAGE_M
+		JPEG_BIN1_RESID_MASK	STR	PPIMAGE_J1_RESID_M
+		JPEG_BIN2_RESID_MASK	STR	PPIMAGE_J2_RESID_M
 
  		JPEG_BIN1_IMAGE_BIAS     STR  PPIMAGE_J1_IMAGE_B
@@ -187,4 +179,16 @@
 	END
 
+	# Additional reduction prescription for generating masks from darks
+	DARKMASK	METADATA
+		MASK_PROCESS		STR	PPIMAGE_OBD
+		MASK_RESID		STR	PPIMAGE_N
+		MASK_VERIFY		STR	PPIMAGE_OBD
+		MASK_STACK		STR	PPMERGE_MASK
+		JPEG_BIN1_IMAGE_MASK	STR	PPIMAGE_J1_IMAGE_M
+		JPEG_BIN2_IMAGE_MASK	STR	PPIMAGE_J2_IMAGE_M
+		JPEG_BIN1_RESID_MASK	STR	PPIMAGE_J1_RESID_M
+		JPEG_BIN2_RESID_MASK	STR	PPIMAGE_J2_RESID_M
+	END
+
 	# basic science analysis
 	DEFAULT		METADATA