Changeset 1353 for trunk/MagicSoft/Mars/manalysis/MHillas.cc

Timestamp:

06/10/02 09:01:08 (22 years ago)

Author:

tbretz

Message:

*** empty log message ***

File:

• trunk/MagicSoft/Mars/manalysis/MHillas.cc (modified) (1 diff)

trunk/MagicSoft/Mars/manalysis/MHillas.cc

@@ -281 +281 @@
     // -------------------------------------------------------------------
     //
-    const float d = corryy - corrxx;
-
-    fDelta = atan2(d + sqrt(d*d + corrxy*corrxy*4), corrxy*2);
+    const float d = (corryy - corrxx)/(corrxy*2);
+
+    fDelta = atan(d + sqrt(d*d + 1));
 
     fCosDelta = cos(fDelta);   // need these in derived classes