Changeset 26788 for branches/eam_branches/20091201/psphot/doc/stack.txt

Timestamp:

Feb 5, 2010, 1:38:43 PM (16 years ago)

Author:

eugene

Message:

updates to psphot APIs to enable stack photometry

Location:

branches/eam_branches/20091201/psphot

Files:

• . (modified) (1 prop)
• doc/stack.txt (modified) (1 diff)

branches/eam_branches/20091201/psphot/doc/stack.txt

@@ +1 @@
+
+20100126:
+
+  * watch out for psphotSetMomentsWindow & MOMENTS_SX_MAX,etc
+  * watch out for psphotSignificanceImage.c:,psphotEfficiency using the FWHM_MAJ from psphotChoosePSF
+    * ppSimDetections.c : SIGMA_SMOOTH
+ppSmooth/src/ppSmoothReadout.c:    psMetadataAddF32(recipe, PS_LIST_TAIL, "EFFECTIVE_AREA", PS_META_REPLACE, "Effective Area", effArea);
+ppSmooth/src/ppSmoothReadout.c:    psMetadataAddF32(recipe, PS_LIST_TAIL, "SIGNIFICANCE_SCALE_FACTOR", PS_META_REPLACE, "Signicance scale factor", factor);
+
+
+20100120 : more stack processing mods:
+
+  there are a number of data collections generated during psphotReadout:
+
+  * detections (currently a structure containing multiple arrays)
+  * sources (a psArray)
+  * psf (the psf model structure)
+  
+  * new sources vs old sources:
+    there is a sequence on the second pass in which we need to distinguish the sources
+    from the first pass from those on the second pass:
+
+    - add noise (old sources only)
+    - find detections
+    - subtract noise (old sources only)
+    - generate sources (new detections only)
+    - source classifications (new sources only)
+    - guess models (new sources only)
+    - replace sources (old sources only)
+    - merge sources (new + old -> sources)
+
+    currently we are distiguishing the old vs new based on different arrays.
+    can we use the processing flags to distinguish the these cases and carry around 
+    only a single source list?
+
+    * detections->peaks holds the most recently detected set of peaks
+      detections->oldPeaks holds the previous collection
+
+      detections->footprints holds the full set of merged footprints,
+      including assigned peaks from the old and new set.
 
 20100107 : updates for stack processing