Monthly Flarelists

.gitignore

@@ -166,3 +166,4 @@ stixcore/data/test/idb/v2.26.38/idb.sqlite
 .python-version
 sunpy/_version.py
 stixcore/_version.py
+.claude/*

stixcore/data/stixcore.ini

@@ -36,3 +36,15 @@ soop_files_download = ./stixcore/data/soop
 ecc_path = /opt/stix_det_cal/bin/
 [Processing]
 flarelist_sdc_min_count = 1000
+# background-data-file lookup (find_background_file_for_time)
+flarelist_bkg_window_past_days = 21
+flarelist_bkg_window_future_days = 21
+flarelist_bkg_min_duration_s = 500
+# require the background file to share the flare's on-board ELUT configuration (ELUTManager lookup)
+flarelist_bkg_require_same_elut = True
+# optional stricter selection (default OFF - all three move common cases, not just edge cases):
+#   purpose preference: prefer purpose=="Background" unless a subject-only match is this many days closer
+#   (0.0 disables); exclude "elevated" backgrounds; drop requests whose comment references a flare id
+flarelist_bkg_purpose_penalty_days = 0.0
+flarelist_bkg_exclude_elevated = False
+flarelist_bkg_exclude_flare_comment = True

stixcore/ephemeris/manager.py

@@ -388,6 +388,20 @@ def get_sun_disc_size(self, *, date):
 
         return rsun_arc
 
+    def get_earth_solo_time_shift(self, *, date):
+        """gets Time(Sun to Earth) - Time(Sun to S/C)
+
+        Returns
+        -------
+        `astropy.units.Quantity`
+            Time difference between Sun to Earth and Sun to S/C in seconds
+        """
+        et = spiceypy.scs2e(SOLAR_ORBITER_ID, str(date))
+        solo_sun_hg, sun_solo_lt = spiceypy.spkezr("SOLO", et, "SUN_EARTH_CEQU", "None", "Sun")
+        sun_earth_hee, sun_earth_lt = spiceypy.spkezr("Earth", et, "SOLO_HEE", "None", "Sun")
+
+        return (sun_earth_lt - sun_solo_lt) * u.s
+
     def get_position(self, *, date, frame):
         """
         Get the position of SolarOrbiter at the given date in the given coordinate frame.