diff --git a/include/mcc/mcc_angle.h b/include/mcc/mcc_angle.h
index a15ac1f..4d9d056 100644
--- a/include/mcc/mcc_angle.h
+++ b/include/mcc/mcc_angle.h
@@ -476,6 +476,93 @@ std::string MccAngleFancyString(std::convertible_to<MccAngle> auto const& ang,
 
 /*                          HELPER TYPES TO REPERESENT ANGLES ON THE CELESTIAL SPHERE                           */
 
+template <MccAngle::norm_kind_t NORM_KIND>
+class MccCelestialAngle : public MccAngle
+{
+public:
+    template <typename... CtorArgTs>
+    MccCelestialAngle(CtorArgTs&&... args) : MccAngle(std::forward<CtorArgTs>(args)...)
+    {
+        normalize<NORM_KIND>();
+    }
+
+    MccCelestialAngle(MccCelestialAngle const&) = default;
+    MccCelestialAngle(MccCelestialAngle&&) = default;
+
+    MccCelestialAngle& operator=(MccCelestialAngle const&) = default;
+    MccCelestialAngle& operator=(MccCelestialAngle&&) = default;
+};
+
+class MccAngleRA_ICRS : public MccCelestialAngle<MccAngle::NORM_KIND_0_360>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_0_360>::MccCelestialAngle;
+};
+
+class MccAngleDEC_ICRS : public MccCelestialAngle<MccAngle::NORM_KIND_90_90>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_90_90>::MccCelestialAngle;
+};
+
+class MccAngleRA_APP : public MccCelestialAngle<MccAngle::NORM_KIND_0_360>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_0_360>::MccCelestialAngle;
+};
+
+class MccAngleDEC_APP : public MccCelestialAngle<MccAngle::NORM_KIND_90_90>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_90_90>::MccCelestialAngle;
+};
+
+class MccAngleRA_OBS : public MccCelestialAngle<MccAngle::NORM_KIND_0_360>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_0_360>::MccCelestialAngle;
+};
+
+class MccAngleDEC_OBS : public MccCelestialAngle<MccAngle::NORM_KIND_90_90>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_90_90>::MccCelestialAngle;
+};
+
+
+class MccAngleHA_APP : public MccCelestialAngle<MccAngle::NORM_KIND_180_180>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_180_180>::MccCelestialAngle;
+};
+
+class MccAngleHA_OBS : public MccCelestialAngle<MccAngle::NORM_KIND_180_180>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_180_180>::MccCelestialAngle;
+};
+
+
+class MccAngleAZ : public MccCelestialAngle<MccAngle::NORM_KIND_0_360>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_0_360>::MccCelestialAngle;
+};
+
+class MccAngleZD : public MccCelestialAngle<MccAngle::NORM_KIND_0_180>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_0_180>::MccCelestialAngle;
+};
+
+class MccAngleALT : public MccCelestialAngle<MccAngle::NORM_KIND_90_90>
+{
+public:
+    using MccCelestialAngle<MccAngle::NORM_KIND_90_90>::MccCelestialAngle;
+};
+
+
+/*
 class MccNamedAngle : public MccAngle
 {
 public:
@@ -573,7 +660,7 @@ public:
     using MccNamedAngle::MccNamedAngle;
     // using MccAngle::MccAngle;
 };
-
+*/
 
 class MccAngleX : public MccAngle  // some co-longitude coordinate
 {