Index: trunk/ippScripts/scripts/register_exp.pl
===================================================================
--- trunk/ippScripts/scripts/register_exp.pl	(revision 19733)
+++ trunk/ippScripts/scripts/register_exp.pl	(revision 19779)
@@ -48,5 +48,5 @@
 
 # add -detrend UNLESS type is one of SCIENCE listed below (eg, OBJECT)
-my @SCIENCE = ( "object", "science" ); # Observation types to NOT mark as detrend
+my @SCIENCE = ( "object", "science", "light" ); # Observation types to NOT mark as detrend
 my $DETREND_FLAG = "-end_stage reg"; # Flag to use to mark detrend exposure