diff --git a/bin/telemetry_sim_LSSTCam b/bin/telemetry_sim_LSSTCam
index d0d95d2e..b02fd578 100755
--- a/bin/telemetry_sim_LSSTCam
+++ b/bin/telemetry_sim_LSSTCam
@@ -27,7 +27,8 @@ def cmdline():
                         help="The DEC of the visit")
     parser.add_argument("--rotpa", action="store", default=0.0, type=float,
                         help="The ROTPA for the visit")
-
+    parser.add_argument("--rotation", action="store", default=0.8, type=float,
+                        help="The START value MTRotator for the visit")
     parser.add_argument("--filterband", action="store", default='r',
                         help="The filter band name (i.e. r)")
     parser.add_argument("--filtername", action="store", default='U-001',
@@ -334,6 +335,11 @@ async def amain():
         await mount.tel_azimuth.set_write(**kwAZ)
         LOGGER.info("Sending simulated mount positions for EL/AZ Start")
 
+        # Sending MTRotator telemetry for ROTSTART
+        kwROT = {'actualPosition': args.rotation}
+        await rotator.tel_rotation.set_write(**kwROT)
+        LOGGER.info("Sending simulated rotator positions for ROTSTART")
+
         # Send the startIntegration for image: k
         LOGGER.info("Sending simulated startIntegration")
         kwInt = {'imagesInSequence': args.NSequence,
@@ -376,6 +382,11 @@ async def amain():
         await mount.tel_azimuth.set_write(**kwAZ)
         LOGGER.info("Sending simulated mount positions for EL/AZ END")
 
+        # Sending MTRotator telemetry for ROTSTART
+        kwROT = {'actualPosition': args.rotation*random.uniform(0.95, 1.05)}
+        await rotator.tel_rotation.set_write(**kwROT)
+        LOGGER.info("Sending simulated rotator positions for ROTEND")
+
         # Send startReadout Event after integration is finished
         LOGGER.info("Sending simulated startReadout")
         del kwInt['timeout']
diff --git a/etc/LSSTCam/primary_hdu.header b/etc/LSSTCam/primary_hdu.header
index 6459465e..8afd4628 100644
--- a/etc/LSSTCam/primary_hdu.header
+++ b/etc/LSSTCam/primary_hdu.header
@@ -38,14 +38,16 @@ RASTART =                      / RA of telescope from AZSTART and ELSTART
 DECSTART=                      / DEC of telescope from AZSTART and ELSTART
 RAEND   =                      / RA of telescope from AZEND and ELEND
 DECEND  =                      / DEC of telescope from AZEND and ELEND
-ROTPA   =                      / Rotation angle relative to the sky (deg)
+ROTPA   =                      / [deg] Rotation angle relative to the sky
 ROTCOORD= 'sky'                / Telescope Rotation Coordinates
+ROTSTART=                      / [deg] Physical rotator position at start
+ROTEND  =                      / [deg] Physical rotator position at end
 HASTART =                      / [HH:MM:SS] Telescope hour angle at start
-ELSTART =                      / [deg] Telescope zenith distance at start
+ELSTART =                      / [deg] Telescope elevation at start
 AZSTART =                      / [deg] Telescope azimuth angle at start
 AMSTART =                      / Airmass at start
 HAEND   =                      / [HH:MM:SS] Telescope hour angle at end
-ELEND   =                      / [deg] Telescope zenith distance at end
+ELEND   =                      / [deg] Telescope elevation at end
 AZEND   =                      / [deg] Telescope azimuth angle at end
 AMEND   =                      / Airmass at end
 TRACKSYS=                      / Tracking system RADEC, AZEL, PLANET, EPHEM
diff --git a/etc/conf/mtTelemetry.yaml b/etc/conf/mtTelemetry.yaml
index 7523558e..e554cefa 100644
--- a/etc/conf/mtTelemetry.yaml
+++ b/etc/conf/mtTelemetry.yaml
@@ -526,6 +526,22 @@ telemetry:
   monitor: True
   rule: min
 
+ ROTSTART:
+  device: MTRotator
+  Stype: Telemetry
+  topic: rotation
+  value: actualPosition
+  collect_after_event: start_collection_event
+
+ ROTEND:
+  device: MTRotator
+  Stype: Telemetry
+  topic: rotation
+  value: actualPosition
+  collect_after_event:
+    device: MTCamera
+    topic: startReadout
+
 # ----- Filter information from MTCamera ----------
 
  FILTBAND: