diff --git a/frame_serialize/JFJochFrameDeserializer.cpp b/frame_serialize/JFJochFrameDeserializer.cpp
index 72574490..226c13b0 100644
--- a/frame_serialize/JFJochFrameDeserializer.cpp
+++ b/frame_serialize/JFJochFrameDeserializer.cpp
@@ -422,6 +422,20 @@ bool JFJochFrameDeserializer::ProcessImageMessageElement(CborValue &value) {
     }
 }
 
+void JFJochFrameDeserializer::ProcessCalibration(CborValue &value) {
+    CborValue map_value;
+    cborErr(cbor_value_enter_container(&value, &map_value));
+    while (! cbor_value_at_end(&map_value)) {
+        auto key = GetCBORString(map_value);
+        CBORImage image;
+        image.channel = key;
+        GetCBORMultidimTypedArray(image, map_value);
+        start_message.calibration.push_back(image);
+    }
+    cborErr(cbor_value_leave_container(&value, &map_value));
+
+}
+
 void JFJochFrameDeserializer::ProcessPixelMaskElement(CborValue &value) {
     CborValue map_value;
     cborErr(cbor_value_enter_container(&value, &map_value));
@@ -547,6 +561,8 @@ void JFJochFrameDeserializer::ProcessStartMessageUserDataElement(CborValue &valu
                 throw JFJochException(JFJochExceptionCategory::CBORError, "Unsupported compression");
         } else if (key == "compression_block_size")
             start_message.compression_block_size = GetCBORUInt(map_value);
+        else if (key == "calibration")
+            ProcessCalibration(map_value);
         else
             cbor_value_advance(&map_value);
     }
diff --git a/frame_serialize/JFJochFrameDeserializer.h b/frame_serialize/JFJochFrameDeserializer.h
index e78ce8d0..748b1948 100644
--- a/frame_serialize/JFJochFrameDeserializer.h
+++ b/frame_serialize/JFJochFrameDeserializer.h
@@ -36,6 +36,7 @@ private:
     GoniometerAxis ProcessGoniometer(CborValue &value);
     void ProcessDetTranslation(CborValue &value);
 
+    void ProcessCalibration(CborValue &value);
     void ProcessChannels(CborValue &value);
     void ProcessImageData(CborValue &value);
     void ProcessPixelMaskElement(CborValue &value);
diff --git a/frame_serialize/JFJochFrameSerializer.cpp b/frame_serialize/JFJochFrameSerializer.cpp
index 92747332..832eee07 100644
--- a/frame_serialize/JFJochFrameSerializer.cpp
+++ b/frame_serialize/JFJochFrameSerializer.cpp
@@ -265,11 +265,21 @@ inline void CBOR_ENC_UNIT_CELL(CborEncoder &encoder, const char* key, const floa
     cborErr(cbor_encoder_close_container(&encoder, &mapEncoder));
 }
 
+inline void CBOR_ENC(CborEncoder &encoder, const char* key, const std::vector<CBORImage> &v) {
+    CborEncoder mapEncoder;
+
+    cborErr(cbor_encode_text_stringz(&encoder, key));
+    cborErr(cbor_encoder_create_map(&encoder, &mapEncoder, v.size()));
+    for (const auto &i: v)
+        CBOR_ENC_2D_TYPED_ARRAY(mapEncoder, i);
+    cborErr(cbor_encoder_close_container(&encoder, &mapEncoder));
+}
+
 inline void CBOR_ENC_USER_DATA(CborEncoder &encoder, const StartMessage& message) {
     CborEncoder mapEncoder;
 
     cborErr(cbor_encode_text_stringz(&encoder, "user_data"));
-    cborErr(cbor_encoder_create_map(&encoder, &mapEncoder, 20));
+    cborErr(cbor_encoder_create_map(&encoder, &mapEncoder, 21));
 
     CBOR_ENC(mapEncoder, "file_prefix", message.file_prefix);
     CBOR_ENC(mapEncoder, "sample_name", message.sample_name);
@@ -304,6 +314,7 @@ inline void CBOR_ENC_USER_DATA(CborEncoder &encoder, const StartMessage& message
     CBOR_ENC(mapEncoder, "rad_int_bin_to_q", message.rad_int_bin_to_q);
     CBOR_ENC(mapEncoder, "rad_int_solid_angle_corr", message.rad_int_solid_angle_corr);
     CBOR_ENC(mapEncoder, "summation", message.summation);
+    CBOR_ENC(mapEncoder, "calibration", message.calibration);
     cborErr(cbor_encoder_close_container(&encoder, &mapEncoder));
 }
 
diff --git a/frame_serialize/StartMessage.h b/frame_serialize/StartMessage.h
index 870cdff9..cfa11c94 100644
--- a/frame_serialize/StartMessage.h
+++ b/frame_serialize/StartMessage.h
@@ -9,6 +9,7 @@
 #include <map>
 #include <vector>
 #include "../compression/CompressionAlgorithmEnum.h"
+#include "ImageMessage.h"
 
 struct GoniometerAxis {
     float increment;
@@ -80,6 +81,8 @@ struct StartMessage {
 
     std::vector<float> rad_int_bin_to_q;
     std::vector<float> rad_int_solid_angle_corr;
+
+    std::vector<CBORImage> calibration;
 };
 
 #endif //JUNGFRAUJOCH_STARTMESSAGE_H
diff --git a/tests/CBORTest.cpp b/tests/CBORTest.cpp
index e2fdc3ab..a335a211 100644
--- a/tests/CBORTest.cpp
+++ b/tests/CBORTest.cpp
@@ -127,6 +127,69 @@ TEST_CASE("CBORSerialize_Start", "[CBOR]") {
 
 }
 
+
+TEST_CASE("CBORSerialize_Start_Calibration", "[CBOR]") {
+    std::vector<uint8_t> buffer(8*1024*1024);
+    JFJochFrameSerializer serializer(buffer.data(), buffer.size());
+
+    std::vector<float> calib1(256);
+    std::vector<float> calib2(256);
+
+    for (int i = 0; i < 256; i++) {
+        calib1[i] = i * 34.567;
+        calib2[i] = i * 76.33456;
+    }
+
+    CBORImage image1 {
+            .data = reinterpret_cast<uint8_t *>(calib1.data()),
+            .size = 16 * 16 * sizeof(float),
+            .xpixel = 16,
+            .ypixel = 16,
+            .pixel_depth_bytes = 4,
+            .pixel_is_signed = true,
+            .pixel_is_float = true,
+            .algorithm = CompressionAlgorithm::NO_COMPRESSION,
+            .channel = "calib1"
+    };
+
+
+    CBORImage image2 {
+            .data = reinterpret_cast<uint8_t *>(calib2.data()),
+            .size = 16 * 16 * sizeof(float),
+            .xpixel = 16,
+            .ypixel = 16,
+            .pixel_depth_bytes = 4,
+            .pixel_is_signed = true,
+            .pixel_is_float = true,
+            .algorithm = CompressionAlgorithm::NO_COMPRESSION,
+            .channel = "calib2"
+    };
+
+    StartMessage message {
+            .calibration = {image2, image1}
+    };
+
+    REQUIRE_NOTHROW(serializer.SerializeSequenceStart(message));
+
+    JFJochFrameDeserializer deserializer;
+    REQUIRE_NOTHROW(deserializer.Process(buffer.data(), serializer.GetBufferSize()));
+    REQUIRE(deserializer.GetType() == JFJochFrameDeserializer::Type::START);
+
+    StartMessage output_message;
+    REQUIRE_NOTHROW(output_message = deserializer.GetStartMessage());
+    REQUIRE(output_message.calibration.size() == 2);
+    CHECK(output_message.calibration[0].pixel_is_float);
+    CHECK(output_message.calibration[1].pixel_is_float);
+    CHECK(output_message.calibration[0].xpixel == 16);
+    CHECK(output_message.calibration[0].ypixel == 16);
+    CHECK(output_message.calibration[1].xpixel == 16);
+    CHECK(output_message.calibration[1].ypixel == 16);
+    CHECK(output_message.calibration[0].channel == "calib2");
+    CHECK(output_message.calibration[1].channel == "calib1");
+    CHECK(memcmp(output_message.calibration[0].data, calib2.data(), 256 * sizeof(float)) == 0);
+    CHECK(memcmp(output_message.calibration[1].data, calib1.data(), 256 * sizeof(float)) == 0);
+}
+
 TEST_CASE("CBORSerialize_End", "[CBOR]") {
     std::vector<uint8_t> buffer(8*1024*1024);
     JFJochFrameSerializer serializer(buffer.data(), buffer.size());