diff --git a/drivers.xml b/drivers.xml
index 029038344b..d5d0d7c9b2 100644
--- a/drivers.xml
+++ b/drivers.xml
@@ -121,11 +121,11 @@
         </device>
         <device label="Rainbow RST-135" manufacturer="Rainbow Astro">
             <driver name="Rainbow">indi_rainbow_telescope</driver>
-            <version>1.1</version>
+            <version>1.3</version>
         </device>
         <device label="Rainbow RST-300" manufacturer="Rainbow Astro">
             <driver name="Rainbow">indi_rainbow_telescope</driver>
-            <version>1.1</version>
+            <version>1.3</version>
         </device>
         <device label="CRUX TitanTCS" manufacturer="HOBYM">
             <driver name="CRUX TitanTCS">indi_crux_mount</driver>
diff --git a/drivers/telescope/rainbow.cpp b/drivers/telescope/rainbow.cpp
index 46586ac98a..a9c79bad62 100644
--- a/drivers/telescope/rainbow.cpp
+++ b/drivers/telescope/rainbow.cpp
@@ -33,7 +33,7 @@ static std::unique_ptr<Rainbow> scope(new Rainbow());
 
 Rainbow::Rainbow() : INDI::Telescope ()
 {
-    setVersion(1, 2);
+    setVersion(1, 3);
 
     SetTelescopeCapability(TELESCOPE_CAN_GOTO |
                            TELESCOPE_CAN_SYNC |
@@ -42,8 +42,7 @@ Rainbow::Rainbow() : INDI::Telescope ()
                            TELESCOPE_CAN_CONTROL_TRACK |
                            TELESCOPE_HAS_TIME |
                            TELESCOPE_HAS_LOCATION |
-                           TELESCOPE_HAS_TRACK_MODE |
-                           TELESCOPE_HAS_PIER_SIDE_SIMULATION, 4);
+                           TELESCOPE_HAS_TRACK_MODE, 4);
 }
 
 /////////////////////////////////////////////////////////////////////////////////////
@@ -756,6 +755,8 @@ bool Rainbow::ReadScopeStatus()
     }
     IDSetNumber(&HorizontalCoordsNP, nullptr);
 
+    setPierSide(getSideOfPier());
+
     NewRaDec(m_CurrentRA, m_CurrentDE);
 
     if (PullVoltTempS[PULL_VOLTTEMP_ENABLED].s == ISS_ON)
@@ -1656,6 +1657,36 @@ bool Rainbow::sendScopeLocation()
     return true;
 }
 
+/////////////////////////////////////////////////////////////////////////////
+/// Send Command
+/////////////////////////////////////////////////////////////////////////////
+Rainbow::TelescopePierSide Rainbow::getSideOfPier()
+{
+    float decAxisAlignmentOffset {0}, decAxis {0};
+    char cyResponse[DRIVER_LEN] = {0}, cg3Response[DRIVER_LEN] = {0};
+
+    if (!sendCommand(":CG3#", cg3Response))
+        return PIER_UNKNOWN;
+
+    sscanf(cg3Response + 3, "%g", &decAxisAlignmentOffset);
+
+    if (!sendCommand(":CY#", cyResponse))
+        return PIER_UNKNOWN;
+
+    char rotationAngle[16] = {0};
+
+    strncpy(rotationAngle, cyResponse + 3, 7);
+
+    sscanf(rotationAngle, "%g", &decAxis);
+
+    auto offset = decAxis - decAxisAlignmentOffset;
+
+    if (offset > 90)
+        return PIER_WEST;
+    else
+        return PIER_EAST;
+}
+
 /////////////////////////////////////////////////////////////////////////////
 /// Send Command
 /////////////////////////////////////////////////////////////////////////////
diff --git a/drivers/telescope/rainbow.h b/drivers/telescope/rainbow.h
index 2b16428a6d..8f5b070a1a 100644
--- a/drivers/telescope/rainbow.h
+++ b/drivers/telescope/rainbow.h
@@ -86,6 +86,7 @@ class Rainbow : public INDI::Telescope, public INDI::GuiderInterface
         ///////////////////////////////////////////////////////////////////////////////
         void getStartupStatus();
         bool getFirmwareVersion();
+        TelescopePierSide getSideOfPier();
 
         ///////////////////////////////////////////////////////////////////////////////
         /// Location & Time