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+#!/bin/sh
+
+# Shell script to extra Ha and OIII data from smallband images
+
+# ------------------------------------------------------------------
+# CONFIGURATION
+
+# Directory names
+LIGHTDIR=Light
+FLATDIR=Flat
+DARKDIR=Dark
+BIASDIR=Bias
+MASTERDIR=Master
+CALIBRATEDDIR=Calibrated
+PROCESSDIR=Process
+
+# Output file names
+MASTERDARK=master_dark
+MASTERBIAS=master_bias
+MASTERFLAT=master_flat
+
+# Framing style 
+# --framing=[cog|max|min]
+OPT_FRAMING=min
+
+# ------------------------------------------------------------------
+# COMMAND LINE OPTIONS
+
+while [ ! -z "$1" ]; do
+
+	case "$1" in
+		-f | --framing)
+			shift
+			OPT_FRAMING=$1
+			echo "Framing ${OPT_FRAMING}"
+			shift
+			;;
+		*)
+			echo "Invalid option $1"
+			exit 1;
+			;;
+	esac
+done
+
+# ------------------------------------------------------------------
+# SAFETY CHECK
+
+if [ ! -d "${PROCESSDIR}" ]; then
+	echo "${PROCESSDIR} directory does not exist!"
+	exit 1
+fi
+
+# ------------------------------------------------------------------
+# EXTRACT Ha AND OIII
+
+
+# ------------------------------------------------------------------
+# REGISTER LIGHTS
+
+echo "------------------------------------------------------------------"
+echo "Extracting Ha and OIII"
+#notify-send "${NOTIFICATIONTITLE}" "Extracting Ha and OIII"
+
+siril-cli -d . -s - <<ENDSIRILEXTRACT
+
+requires 1.3.4
+
+cd ${PROCESSDIR}
+
+# Extract Ha and OIII
+seqextract_HaOIII preprocess -resample=ha
+
+# Align Ha lights
+register Ha_preprocess
+
+# Stack calibrated Ha lights to Ha_stack (temporary)
+stack r_Ha_preprocess rej 3 3 -norm=addscale -output_norm -32b -out=results_00001
+
+# and flip if required
+mirrorx_single results_00001
+
+# Align OIII lights
+register OIII_preprocess
+
+# Stack calibrated OIII lights to OIII_stack (temporary)
+stack r_OIII_preprocess rej 3 3 -norm=addscale -output_norm -32b -out=results_00002
+
+# and flip if required
+mirrorx_single results_00002
+
+# Align the result images, small shifts and chromatic aberrations can occur
+register results -transf=shift -interp=none
+
+# Renorm OIII to Ha using PixelMath
+pm \$r_results_00002\$*mad(\$r_results_00001\$)/mad(\$r_results_00002\$)-mad(\$r_results_00001\$)/mad(\$r_results_00002\$)*median(\$r_results_00002\$)+median(\$r_results_00001\$)
+save ../result_OIII_\$LIVETIME:%d\$s
+
+# Save Ha final result
+load r_results_00001
+save ../result_Ha_\$LIVETIME:%d\$s
+
+ENDSIRILEXTRACT
+
+notify-send -a "Siril" "Extracting Ha and OIII (Finished)"
+