diff --git a/xga/generate/esass/spec.py b/xga/generate/esass/spec.py
index 8dd1965f..c4f52ac3 100644
--- a/xga/generate/esass/spec.py
+++ b/xga/generate/esass/spec.py
@@ -265,22 +265,19 @@ def _append_spec_info(evt_list):
 
             # Fills out the srctool command to make the main and background spectra
             if isinstance(source, ExtendedSource):
-                if use_combine_obs and (len(source.obs_ids['erosita']) > 1):
-                    # We only need the extmap path for extended source generation 
-                    extmap_path = _ext_map_creation(source, outer_radii[src_ind], dest_dir, True)
-
-                else:
-                    # We only need the extmap path for extended source generation 
-                    extmap_path = _ext_map_creation(source, outer_radii[src_ind], dest_dir, False)
-
-                # We have a slightly different command for extended and point sources
-                s_cmd_str = ext_srctool_cmd.format(d=dest_dir, ef=evt_list.path, sc=coord_str, 
-                                                   reg=src_reg_str, i=inst_no, ts=t_step, 
-                                                   em=extmap_path, et=et)
-
-            else:
-                s_cmd_str = pnt_srctool_cmd.format(d=dest_dir, ef=evt_list.path, sc=coord_str, reg=src_reg_str,
-                                                i=inst_no, ts=t_step)
+                try:
+                    if use_combine_obs and (len(source.obs_ids['erosita']) > 1):
+                        im = source.get_combined_images(lo_en=Quantity(0.2, 'keV'), hi_en=Quantity(10.0, 'keV'), 
+                                                        telescope='erosita')
+                    else:
+                        # We only need the image path for extended source generation 
+                        im = source.get_images(obs_id, lo_en=Quantity(0.2, 'keV'), hi_en=Quantity(10.0, 'keV'),
+                            telescope='erosita')
+                    # We have a slightly different command for extended and point sources
+                    s_cmd_str = ext_srctool_cmd.format(d=dest_dir, ef=evt_list.path, sc=coord_str, reg=src_reg_str,
+                                                    i=inst_no, ts=t_step, em=im.path, et=et)
+                except:
+                    raise ValueError(f"it was this sources {source.name}")
 
             # TODO FIGURE OUT WHAT TO DO ABOUT THE TIMESTEP
             sb_cmd_str = bckgr_srctool_cmd.format(ef=evt_list.path, sc=coord_str, breg=bsrc_reg_str,