Fix incorrect column name

gwcelery/tasks/external_skymaps.py

@@ -48,7 +48,7 @@ def create_combined_skymap(se_id, ext_id):
         |
         group(
             gracedb.upload.s('combined-ext.multiorder.fits', se_id,
-                             message, ['sky_loc', 'public']),
+                             message, ['sky_loc', 'ext_coinc', 'public']),
 
             skymaps.plot_allsky.s()
             |
@@ -96,14 +96,14 @@ def combine_skymaps(skymapfilesbytes):
     then returns the contents of the file as a byte array.
     """
     skymap1filebytes, skymap2filebytes = skymapfilesbytes
-    with NamedTemporaryFile(mode='rb', suffix='.fits.gz') as combinedskymap, \
+    with NamedTemporaryFile(mode='rb', suffix='.fits') as combinedskymap, \
             NamedTemporaryFile(content=skymap1filebytes) as skymap1file, \
             NamedTemporaryFile(content=skymap2filebytes) as skymap2file, \
             handling_system_exit():
         sky1 = HealpixMap.read_map(skymap1file.name, density=True)
         sky2 = HealpixMap.read_map(skymap2file.name, density=False)
         comb_sky = sky1 * sky2
-        comb_sky.write_map(combinedskymap.name)
+        comb_sky.write_map(combinedskymap.name, column_names='PROBDENSITY')
         return combinedskymap.read()