diff --git a/observation_portal/common/configdb.py b/observation_portal/common/configdb.py
index e88fef21..7c182647 100644
--- a/observation_portal/common/configdb.py
+++ b/observation_portal/common/configdb.py
@@ -463,6 +463,12 @@ def get_instrument_type_full_name(self, instrument_type):
                 return instrument['science_camera']['camera_type']['name']
         return instrument_type
 
+    def get_instrument_type_telescope_class(self, instrument_type):
+        for instrument in self.get_instruments():
+            if instrument_type.upper() == instrument['science_camera']['camera_type']['code'].upper():
+                return instrument['__str__'].split('.')[2][0:3]
+        return instrument_type[0:3]
+
     def get_active_instrument_types(self, location: dict) -> set:
         """Get the available instrument_types.
 
diff --git a/observation_portal/requestgroups/views.py b/observation_portal/requestgroups/views.py
index ef1ab3cd..1f15aa4f 100644
--- a/observation_portal/requestgroups/views.py
+++ b/observation_portal/requestgroups/views.py
@@ -187,7 +187,7 @@ def get(self, request):
         for instrument_type in configdb.get_active_instrument_types({}):
             info[instrument_type] = {
                 'type': 'SPECTRA' if configdb.is_spectrograph(instrument_type) else 'IMAGE',
-                'class': instrument_type[0:3],
+                'class': configdb.get_instrument_type_telescope_class(instrument_type),
                 'name': configdb.get_instrument_type_full_name(instrument_type),
                 'optical_elements': configdb.get_optical_elements(instrument_type),
                 'modes': configdb.get_modes_by_type(instrument_type),