Changeset 42087 for trunk/psphot/src/psphotChoosePSF.c

Timestamp:

Feb 28, 2022, 2:36:39 PM (4 years ago)

Author:

eugene

Message:

especially in very high-dynamic range stack images, the peak pixels can drive the PSF fit too much: add an option for iterative reweighting of the pixel values during the non-linear fit

File:

• trunk/psphot/src/psphotChoosePSF.c (modified) (2 diffs)

trunk/psphot/src/psphotChoosePSF.c

@@ -164 +164 @@
         // default to the old method (chisqConvergence)
         chisqConvergence = true;
+    }
+
+    bool useReweighting = psMetadataLookupBool (&status, recipe, "LMM_FIT_USE_REWEIGHTING"); // Fit tolerance
+    if (!status) {
+        useReweighting = false;
     }
 
@@ -185 +190 @@
     options->fitOptions->gainFactorMode   = gainFactorMode;
     options->fitOptions->chisqConvergence = chisqConvergence;
+    options->fitOptions->useReweighting   = useReweighting;
 
     psArray *stars = psArrayAllocEmpty (sources->n);