diff --git a/SAS/TMSS/src/tmss/tmssapp/adapters/parset.py b/SAS/TMSS/src/tmss/tmssapp/adapters/parset.py
index 94af483cc8fd31248f4fff9f4dc357d6a07175f8..18068fe8ee4976828ebe15c820127f0c54bb2518 100644
--- a/SAS/TMSS/src/tmss/tmssapp/adapters/parset.py
+++ b/SAS/TMSS/src/tmss/tmssapp/adapters/parset.py
@@ -20,21 +20,70 @@
 from lofar.sas.tmss.tmss.tmssapp.models.scheduling import Subtask
 from lofar.parameterset import parameterset
 from lofar.common.datetimeutils import formatDatetime
+from lofar.common.json_utils import add_defaults_to_json_object_for_schema
 
 def convert_to_parset(subtask: Subtask) -> parameterset:
-    print(subtask.specifications_doc)
+    # make sure the spec is complete (including all non-filled in properties with default)
+    spec = add_defaults_to_json_object_for_schema(subtask.specifications_doc, subtask.specifications_template.schema)
 
     parset = dict() # parameterset has no proper assignment operators, so take detour via dict...
+    parset["Observation.ObsID"] = subtask.pk
+    parset["Observation.momID"] = -1 # Needed by MACScheduler
+    parset["Observation.otdbID"] = -1 # Needed by MACScheduler; should/can this be the same as subtask.pk?
+    parset["Observation.processType"] = subtask.specifications_template.type.value.capitalize()
+    parset["Observation.processSubtype"] = subtask.specifications_template.type.value.capitalize() # TODO: where to derive the processSubtype from?
     parset["Observation.startTime"] = formatDatetime(subtask.start_time)
     parset["Observation.stopTime"] = formatDatetime(subtask.stop_time)
-    parset["Observation.antennaSet"] = subtask.specifications_doc["stations"]["antenna_set"]
-    parset["Observation.VirtualInstrument.stationList"] = subtask.specifications_doc["stations"]["station_list"]
-    parset["Observation.bandFilter"] = subtask.specifications_doc["stations"]["filter"]
-    parset["Observation.sampleClock"] = 200
-    parset["Observation.nrBitsPerSample"] = 8
+    parset["Observation.VirtualInstrument.stationList"] = spec["stations"]["station_list"]
+    parset["Observation.antennaSet"] = spec["stations"]["antenna_set"]
+    parset["Observation.bandFilter"] = spec["stations"]["filter"]
+    parset["Observation.sampleClock"] = 200 # why is this not part of the schema? for example as a required setting with a single allowed value.
+    parset["Observation.nrBitsPerSample"] = 8 # why is this not part of the schema? for example as a required setting with a single allowed value.
+
+    digi_beams = spec['stations']['digital_pointings']
+    parset["Observation.nrBeams"] = len(digi_beams)
+    for beam_nr, digi_beam in enumerate(digi_beams):
+        beam_prefix = "Observation.Beam[%d]." % beam_nr
+        parset[beam_prefix+"directionType"] = digi_beam['pointing']['direction_type']
+        parset[beam_prefix+"angle1"] = digi_beam['pointing']['angle1']
+        parset[beam_prefix+"angle2"] = digi_beam['pointing']['angle2']
+        parset[beam_prefix+"target"] = digi_beam['name']
+        parset[beam_prefix+"subbandList"] = digi_beam['subbands']
+
+        phase_centers = spec['COBALT']['correlator']['phase_centers']
+        if phase_centers:
+            # for now, cobalt can handle only one phase_center
+            # assume the first is the one
+            phase_center = phase_centers[0]
+            parset[beam_prefix+"Correlator.phaseCenterOverride"] = phase_center['index'] == beam_nr
+            parset[beam_prefix+"Correlator.directionType"] = phase_center['pointing']['direction_type']
+            parset[beam_prefix+"Correlator.angle1"] = phase_center['pointing']['angle1']
+            parset[beam_prefix+"Correlator.angle2"] = phase_center['pointing']['angle2']
+
+    analog_beam = spec['stations']['analog_pointing']
+    parset["Observation.nrAnaBeams"] = 1
+    beam_prefix = "Observation.AnaBeam[0]."
+    parset[beam_prefix+"directionType"] = analog_beam['direction_type']
+    parset[beam_prefix+"angle1"] = analog_beam['angle1']
+    parset[beam_prefix+"angle2"] = analog_beam['angle2']
+
+    parset["Cobalt.realTime"] = True
+    parset["Cobalt.blockSize"] = spec['COBALT']['blocksize']
+    parset["Cobalt.correctBandPass"] = spec['COBALT']['bandpass_correction']
+    parset["Cobalt.delayCompensation"] = spec['COBALT']['delay_compensation']
+
+    parset["Cobalt.Correlator.nrChannelsPerSubband"] = spec['COBALT']['correlator']['channels_per_subband']
+    parset["Cobalt.Correlator.nrBlocksPerIntegration"] = spec['COBALT']['correlator']['blocks_per_integration']
+    parset["Cobalt.Correlator.nrIntegrationsPerBlock"] = spec['COBALT']['correlator']['integrations_per_block']
+
+    parset["Observation.DataProducts.Output_Correlated.enabled"] = True
+
+    # TODO: locations of dataproducts
+    parset["Observation.DataProducts.Output_Correlated.filenames"] = []
+    parset["Observation.DataProducts.Output_Correlated.locations"] = []
+    parset["Observation.Cluster.ProcessingCluster.clusterName"] = subtask.cluster or "CEP4"
 
     # convert dict to real parameterset, and return it
     parset = parameterset(parset)
-    print(parset)
     return parset
 
diff --git a/SAS/TMSS/test/t_parset_adapter.py b/SAS/TMSS/test/t_parset_adapter.py
index c4aad2d1fa54aa717e2b53834cc3f9ed96933c9b..39b9f01f1871e991e5185fbf4a78e47b91f17ca5 100755
--- a/SAS/TMSS/test/t_parset_adapter.py
+++ b/SAS/TMSS/test/t_parset_adapter.py
@@ -46,6 +46,8 @@ class ParsetAdapterTest(unittest.TestCase):
     def test_01(self):
         subtask_template = models.SubtaskTemplate.objects.get(name='obscontrol schema')
         specifications_doc = get_default_json_object_for_schema(subtask_template.schema)
+        for dp in specifications_doc['stations']['digital_pointings']:
+            dp['subbands'] = list(range(8))
         subtask_data = Subtask_test_data(subtask_template, specifications_doc)
         subtask = models.Subtask.objects.create(**subtask_data)