diff --git a/ccd_defs.json b/ccd_defs.json
index d96ec682..af5251d8 100644
--- a/ccd_defs.json
+++ b/ccd_defs.json
@@ -309,4 +309,5 @@
   "SONY SLT-A77V": 23.5,
   "SONY SLT-A99": 35.8,
   "Vexcel UltraCam": 28.00
+  "Mantis i23": 45.00
 }