From 339e27a4aa9c41bfabeb459b4ca82afe0355a39d Mon Sep 17 00:00:00 2001
From: Ian Sullivan <sullii@uw.edu>
Date: Wed, 25 Mar 2026 10:50:56 -0700
Subject: [PATCH] Turn off background re-estimation in calibrateImage

---
 pipelines/_ingredients/ApPipe.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pipelines/_ingredients/ApPipe.yaml b/pipelines/_ingredients/ApPipe.yaml
index 591c662..a5ced30 100644
--- a/pipelines/_ingredients/ApPipe.yaml
+++ b/pipelines/_ingredients/ApPipe.yaml
@@ -54,6 +54,12 @@ tasks:
       # Downsample footprints prior to deblending to optimize speed
       do_downsample_footprints: True
       downsample_max_footprints: 1000
+      # Use adaptive thresholds for matching to the reference catalog
+      # This narrows and brightens the magnitude range of reference sources
+      do_adaptive_threshold_detection: True
+      # Disable refining the background level after star detection, which can
+      # take many 10s of seconds in crowded fields
+      do_remeasure_star_background: False
   consolidateVisitSummary:
     class: lsst.pipe.tasks.postprocess.ConsolidateVisitSummaryTask
     config: