Index: trunk/ippconfig/megacam/format_split.config
===================================================================
--- trunk/ippconfig/megacam/format_split.config	(revision 8945)
+++ trunk/ippconfig/megacam/format_split.config	(revision 10091)
@@ -1,3 +1,4 @@
-# The split MecaCam data is stored in single file for each chip
+# "mcshort" is a MegaCam camera with only the central six chips --- it's faster than the entire FPA.
+# The spliced MecaCam data is stored in single extensions for each chip
 
 # How to recognise this type
@@ -7,16 +8,16 @@
 END
 
-# How to read this dataF
 FILE	METADATA
+	# How to read this data
 	PHU		STR	CHIP	# The FITS file represents an entire FPA
 	EXTENSIONS	STR	NONE	# The extensions represent chips
-	FPA.NAME	STR	EXPNUM	# A PHU keyword for the FPA name
-	CHIP.NAME	STR	EXTNAME	# A PHU keyword for the chip name
-	CONTENT		STR	{CHIP.NAME} # A string to index the CONTENTS menu; required because EXT=NONE
+	FPA.NAME	STR	EXPNUM	# A PHU keyword for unique identifier
+	CHIP.NAME	STR	EXTNAME	# An extension keyword for unique identifie
+	CONTENT		STR	{CHIP.NAME}	# Key to the CONTENTS menu
 END
 
 # What's in the FITS file?
 CONTENTS	METADATA
-	# Chip name, components
+	# Extension name, chip name:component cell
 	ccd00		STR	ccd00:LeftAmp:left ccd00:RightAmp:right
 	ccd01		STR	ccd01:LeftAmp:left ccd01:RightAmp:right
@@ -65,4 +66,6 @@
 		CELL.TRIMSEC		STR	TSECA
 		CELL.X0			S32	0
+		CELL.GAIN.SOURCE	STR	HEADER
+		CELL.GAIN		STR	GAINA
 	END
 
@@ -73,4 +76,6 @@
 		CELL.TRIMSEC		STR	TSECB
 		CELL.X0			S32	1024
+		CELL.GAIN.SOURCE	STR	HEADER
+		CELL.GAIN		STR	GAINB
 	END
 END
@@ -86,4 +91,7 @@
         FPA.RADECSYS    STR     RADECSYS
 	FPA.OBSTYPE	STR	OBSTYPE
+	FPA.OBJECT	STR	CMMTOBS
+	FPA.TIME	STR	MJD-OBS
+	FPA.TIMESYS	STR	TIMESYS
 	FPA.ALT		STR	TELALT
 	FPA.AZ		STR	TELAZ
@@ -91,8 +99,8 @@
         CELL.EXPOSURE   STR     EXPTIME
         CELL.DARKTIME   STR     DARKTIME
-        CELL.GAIN       STR     GAIN
         CELL.READNOISE  STR     RDNOISE
         CELL.SATURATION STR     SATURATE
 	CELL.TIME	STR	MJD-OBS
+	CELL.TIMESYS	STR	TIMESYS
         CELL.XBIN       STR     CCDBIN1
         CELL.YBIN       STR     CCDBIN2
@@ -103,9 +111,7 @@
 	CELL.READDIR		S32	1		# Cell is read in x direction
         CELL.BAD                S32     0
-	CELL.TIMESYS		STR	UTC
 	CELL.XPARITY		S32	1
 	CELL.YPARITY		S32	1
 	CELL.Y0			S32	0
-
 	CHIP.X0.DEPEND		STR	CHIP.NAME
 	CHIP.X0		METADATA
@@ -186,43 +192,5 @@
 		ccd35	S32	0
 	END
-	CHIP.XPARITY.DEPEND	STR	CHIP.NAME
-	CHIP.XPARITY	METADATA
-		ccd00	S32	1
-		ccd01	S32	1
-		ccd02	S32	1
-		ccd03	S32	1
-		ccd04	S32	1
-		ccd05	S32	1
-		ccd06	S32	1
-		ccd07	S32	1
-		ccd08	S32	1
-		ccd09	S32	1
-		ccd10	S32	1
-		ccd11	S32	1
-		ccd12	S32	1
-		ccd13	S32	1
-		ccd14	S32	1
-		ccd15	S32	1
-		ccd16	S32	1
-		ccd17	S32	1
-		ccd18	S32	1
-		ccd19	S32	1
-		ccd20	S32	1
-		ccd21	S32	1
-		ccd22	S32	1
-		ccd23	S32	1
-		ccd24	S32	1
-		ccd25	S32	1
-		ccd26	S32	1
-		ccd27	S32	1
-		ccd28	S32	1
-		ccd29	S32	1
-		ccd30	S32	1
-		ccd31	S32	1
-		ccd32	S32	1
-		ccd33	S32	1
-		ccd34	S32	1
-		ccd35	S32	1
-	END
+	CHIP.XPARITY		S32	1
 	CHIP.YPARITY.DEPEND	STR	CHIP.NAME
 	CHIP.YPARITY	METADATA
@@ -283,4 +251,6 @@
 	FPA.RA		STR	HOURS
 	FPA.DEC		STR	DEGREES
+	FPA.TIME	STR	MJD
 	CELL.TIME	STR	MJD
 END
+