Changeset 12342

Timestamp:

Mar 8, 2007, 1:37:44 PM (19 years ago)

Author:

rhl

Message:

Scale up errors by sqrt(factor applied to chi^{2). This is correct if the errors are Gaussian but misestimated, and seems wise anyway}

File:

• branches/rel-0-8/psphot/src/psphotEvalPSF.c (modified) (1 diff)

branches/rel-0-8/psphot/src/psphotEvalPSF.c

@@ -114 +114 @@
 
     SN  = model->params->data.F32[PM_PAR_I0]/model->dparams->data.F32[PM_PAR_I0];
+    SN *= sqrt(model->chisqNorm/model->chisq);  // allow for bad measured chisq
+
     SX  = model->params->data.F32[PM_PAR_SXX];
     SY  = model->params->data.F32[PM_PAR_SYY];