Index: trunk/MagicSoft/GC-Proposal/GC.tex
===================================================================
--- trunk/MagicSoft/GC-Proposal/GC.tex	(revision 6785)
+++ trunk/MagicSoft/GC-Proposal/GC.tex	(revision 6786)
@@ -345,6 +345,5 @@
 \section{Feasibility} 
 
-
-The differential gamma flux observed by the HESS collaboration is given by \cite{GC_hess}:
+The HESS collaboration has observed the GC for 16.5 hours, at zenith angles around 20 degrees, with energy thresholds between 165 and 255 GeV. The total number of excess events amounts to $\sim$300, and the differential gamma flux is measured as \cite{GC_hess}:
 
 \begin{equation}
@@ -420,5 +419,5 @@
 \section{Requested Observation Time}
 
-Based on the above estimations a 5 $\sigma$ excess is expected to be observed in about 2 hours assuming the HESS flux. To acquire a comparable data set to the other experiments at least 20 hours of good ON data and 20 hours of good dedicated OFF data are needed. 
+Based on the above estimations a 5 $\sigma$ excess is expected to be observed in about 2 hours assuming the HESS flux. To acquire a data set which is comparable in size to those of the other experiments at least 20 hours of good ON data and 20 hours of good dedicated OFF data are needed. 
 
 To get the lowest possible threshold all data shall be taken at the