diff --git a/csaxs_bec/file_writer/csaxs_nexus.py b/csaxs_bec/file_writer/csaxs_nexus.py
index 1e9b84b..abfee67 100644
--- a/csaxs_bec/file_writer/csaxs_nexus.py
+++ b/csaxs_bec/file_writer/csaxs_nexus.py
@@ -24,7 +24,54 @@ class cSAXSNeXusFormat(DefaultFormat):
         See also: :class:`bec_server.file_writer.file_writer.HDF5Storage`.
 
         """
+        entry = self.storage.create_group("entry")
+        # ------------------------------------------------------------------
+        # Create ptychography entry
+        # ------------------------------------------------------------------
+        entry_ptycho = entry.create_group("entry_ptycho")
+        entry_ptycho.attrs["NX_class"] = "NXentry"
+        entry_ptycho.attrs["definition"] = "NXptycho"
 
+        # ------------------------------------------------------------------
+        # NXdata group
+        # ------------------------------------------------------------------
+        nxdata = entry_ptycho.create_group("data")
+        nxdata.attrs["NX_class"] = "NXdata"
+        nxdata.attrs["signal"] = "data"
+
+        # ------------------------------------------------------------------
+        # Link Eiger data (external)
+        # ------------------------------------------------------------------
+        data = entry.create_group("data")
+        data.attrs["NX_class"] = "NXentry"
+        # Either ext link!
+        #data.create_ext_link("data", self.file_references["eiger_1_5"].file_path, "entry/data")
+        # Or soft link to already linked path
+        data_soft = entry.create_group("data_soft")
+        data_soft.attrs["NX_class"] = "NXentry"
+        for k in self.file_references["eiger_1_5"].hinted_h5_entries.keys():
+            data_soft.create_soft_link(k, f"/entry/collection/file_references/eiger_1_5/{k}")
+
+        # ------------------------------------------------------------------
+        # Link positions (soft links)
+        # ------------------------------------------------------------------
+        positions_path = "/entry/collection/devices/rt_positions"
+
+        try:
+            nxdata.create_soft_link("positions", positions_path)
+        except Exception:
+            pass
+
+        # ------------------------------------------------------------------
+        # Sample group
+        # ------------------------------------------------------------------
+        sample = entry_ptycho.create_group("sample")
+        sample.attrs["NX_class"] = "NXsample"
+
+        try:
+            sample.create_soft_link("positions", positions_path)
+        except Exception:
+            pass
         # entry = self.storage.create_group("entry")
 
         # # /entry/control