diff --git a/gemini_instruments/f2/tests/test_f2.py b/gemini_instruments/f2/tests/test_f2.py
index f49a52c220..62f2b3fc0c 100644
--- a/gemini_instruments/f2/tests/test_f2.py
+++ b/gemini_instruments/f2/tests/test_f2.py
@@ -6,6 +6,11 @@
 import gemini_instruments
 from gemini_instruments.f2 import AstroDataF2
 
+import numpy as np
+
+
+FLOAT_TYPES = (float, np.float32, np.float64)
+
 test_files = [
     "S20131121S0094.fits",
     "S20131126S1111.fits",
@@ -16,9 +21,9 @@
 ]
 
 F2_DESCRIPTORS_TYPES = [
-    ('detector_x_offset', float),
-    ('detector_y_offset', float),
-    ('pixel_scale', float),
+    ('detector_x_offset', FLOAT_TYPES),
+    ('detector_y_offset', FLOAT_TYPES),
+    ('pixel_scale', FLOAT_TYPES),
 ]
 
 
diff --git a/gemini_instruments/gmos/tests/test_gmos.py b/gemini_instruments/gmos/tests/test_gmos.py
index eaf77f7334..469f7a2691 100644
--- a/gemini_instruments/gmos/tests/test_gmos.py
+++ b/gemini_instruments/gmos/tests/test_gmos.py
@@ -4,9 +4,14 @@
 import astrodata.testing
 import gemini_instruments
 
+import numpy as np
+
+
+FLOAT_TYPES = (float, np.float32, np.float64)
+
 GMOS_DESCRIPTORS_TYPES = [
-    ('detector_x_offset', float),
-    ('detector_y_offset', float),
+    ('detector_x_offset', FLOAT_TYPES),
+    ('detector_y_offset', FLOAT_TYPES),
     ('nod_count', tuple),
     ('nod_offsets', tuple),
     ('pixel_scale', float),
diff --git a/gemini_instruments/gmu.py b/gemini_instruments/gmu.py
index 8c812b02c7..cbcc6f7ff9 100644
--- a/gemini_instruments/gmu.py
+++ b/gemini_instruments/gmu.py
@@ -135,7 +135,6 @@ def gn(instance, asMicrometers=False, asNanometers=False, asAngstroms=False,
             # Ensure we return a list, not an array
             # nm are the "standard" DRAGONS wavelength unit
             retval = fn(instance, **kwargs)
-            print("RETVAL", retval)
             if retval is None:
                 return retval
             if isinstance(retval, list):
diff --git a/gemini_instruments/gnirs/tests/test_gnirs.py b/gemini_instruments/gnirs/tests/test_gnirs.py
index ae41501a6b..248e654f34 100644
--- a/gemini_instruments/gnirs/tests/test_gnirs.py
+++ b/gemini_instruments/gnirs/tests/test_gnirs.py
@@ -5,6 +5,11 @@
 import gemini_instruments
 from gemini_instruments.gnirs import AstroDataGnirs
 
+import numpy as np
+
+
+FLOAT_TYPES = (float, np.float32, np.float64)
+
 test_files = [
     "N20190206S0279.fits",
     "N20190214S0058.fits",
@@ -15,9 +20,9 @@
 
 
 GNIRS_DESCRIPTORS_TYPES = [
-    ('detector_x_offset', float),
-    ('detector_y_offset', float),
-    ('pixel_scale', float),
+    ('detector_x_offset', FLOAT_TYPES),
+    ('detector_y_offset', FLOAT_TYPES),
+    ('pixel_scale', FLOAT_TYPES),
 ]
 
 
diff --git a/gemini_instruments/test/test_astrodata_descriptors.py b/gemini_instruments/test/test_astrodata_descriptors.py
index 6cab226443..fbb5e23981 100644
--- a/gemini_instruments/test/test_astrodata_descriptors.py
+++ b/gemini_instruments/test/test_astrodata_descriptors.py
@@ -47,5 +47,11 @@ def test_descriptor(instr, filename, descriptor, value):
         mvalue = method()
         if type(value) in FLOAT_TYPES or type(mvalue) in FLOAT_TYPES:
             assert abs(mvalue - value) < 0.0001
-        else:
+        elif isinstance(value, list):
+            assert len(value) == len(mvalue)
+            for v, mv in zip(value, mvalue):
+                if type(v) in FLOAT_TYPES or type(mv) in FLOAT_TYPES:
+                    assert abs(mv - v) < 0.0001
+                else:
+                    assert v == mv
             assert value == mvalue