diff --git a/README.md b/README.md
index 9bc5747..298a9c4 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,10 @@
 # auto-scheduler
 
+This is a tool to automatically compute passes of satellites on the
+SatNOGS network. It uses code from the SatNOGS network scheduler. A
+file with two-line elements of satellites to schedule needs to be
+provided, as well as a SatNOGS station number. The scheduler will then
+calculate passes and sort them based on the priorities dictionary, or
+otherwise by their culmination altitude. The output are firefox
+queries that allow the user to quickly calculate ('c' key) and
+schedule ('s' key) passes using the SatNOGS API.
\ No newline at end of file