diff --git a/airshower_beacon_simulation/Makefile b/airshower_beacon_simulation/Makefile
index 3c33a3d..7a87ca5 100644
--- a/airshower_beacon_simulation/Makefile
+++ b/airshower_beacon_simulation/Makefile
@@ -67,6 +67,9 @@ antenna-phase:
 findks:
 	./ca_period_from_shower.py --input-fname ${INPUT_DIR} --max-k ${MAX_K} --no-show-plots --fig-dir=${FIG_DIR} --data-dir ${DATA_DIR} -l ${PB_LOW} -u ${PB_HIGH}
 
+rough-findks:
+	./ca_period_from_shower.py --input-fname ${INPUT_DIR} --max-k ${MAX_K} --no-show-plots --fig-dir=${FIG_DIR} --data-dir ${DATA_DIR} -l ${PB_LOW} -u ${PB_HIGH} --quick_run
+
 reportks:
 	./cb_report_measured_antenna_time_offsets.py --no-show-plots --fig-dir=${FIG_DIR} --data-dir ${DATA_DIR}