Changeset 843 for trunk/stac/scripts/fakeimage.c

Timestamp:

Jun 3, 2004, 10:03:58 AM (22 years ago)

Author:

Paul Price

Message:

Added normalisation for stars, so that their peak flux will
change with the seeing: normalised to *total* flux.

File:

• trunk/stac/scripts/fakeimage.c (modified) (2 diffs)

trunk/stac/scripts/fakeimage.c

@@ -1 +1 @@
 /*
-** $Id: fakeimage.c,v 1.3 2004-05-20 00:17:00 price Exp $
+** $Id: fakeimage.c,v 1.4 2004-06-03 20:03:58 price Exp $
 ** Program to make some fake images.
 **
@@ -563 +563 @@
     for (j=minj;j<=maxj;j++)
         for (k=mink;k<=maxk;k++)
-            data[(nx+nxos)*k+j] += flux*exp(-1.0 * ((x-j)*(x-j) + (y-k)*(y-k))/2.0/(seeing/SIGMAtoFWHM)/(seeing/SIGMAtoFWHM));
+            data[(nx+nxos)*k+j] += flux/sqrt(2.0*M_PI)/(seeing/SIGMAtoFWHM)*exp(-1.0 * ((x-j)*(x-j) + (y-k)*(y-k))/2.0/(seeing/SIGMAtoFWHM)/(seeing/SIGMAtoFWHM));
     
 }