diff --git a/lisainstrument/instrument.py b/lisainstrument/instrument.py
index 3f6f02cf8346083bea3e3e430d6cb285ab06f731..c47999d3a64da1010dc146103a468ee2c2ed9be4 100755
--- a/lisainstrument/instrument.py
+++ b/lisainstrument/instrument.py
@@ -1222,12 +1222,12 @@ class Instrument:
 
         ## Sampling beatnotes, DWS measurements, and measured pseudo-ranges to THE grid
 
-        logger.info("Inverting THEs with respect to TPS")
-        self.inverse_the_wrt_tps = self.the_wrt_tps_local \
+        logger.info("Inverting THE with respect to TPS")
+        self.tps_wrt_the = self.the_wrt_tps_local \
             .transformed(lambda sc, x: self.invert_the_wrt_tps(x, sc))
 
         self.timestamped = \
-            lambda mosa, x: self.interpolate(x, -self.inverse_the_wrt_tps.for_each_mosa()[mosa])
+            lambda mosa, x: self.interpolate(x, -self.tps_wrt_the.for_each_mosa()[mosa])
 
         logger.info("Sampling inter-spacecraft beatnotes to THE grid")
 
@@ -2027,8 +2027,8 @@ class Instrument:
                 self.tps_rfi_usb_offsets.write(hdf5, 'tps_rfi_usb_offsets')
                 self.tps_rfi_usb_fluctuations.write(hdf5, 'tps_rfi_usb_fluctuations')
 
-                logger.debug("Writing inverted THE with respect to TPS to '%s'", output)
-                self.inverse_the_wrt_tps.write(hdf5, 'inverse_the_wrt_tps')
+                logger.debug("Writing TPS with respect to THE to '%s'", output)
+                self.tps_wrt_the.write(hdf5, 'tps_wrt_the')
 
                 logger.debug("Writing inter-spacecraft beatnotes sampled to THE grid to '%s'", output)
                 self.the_isi_carrier_offsets.write(hdf5, 'the_isi_carrier_offsets')