observation_sim/mock_objects/MockObject.py

@@ -172,7 +172,10 @@ class MockObject(object):
             # star = galsim.Convolve(psf, star)
             star = psf.withFlux(nphotons)
 
+            if EXTRA:
                 stamp = star.drawImage(method='no_pixel', wcs=chip_wcs_local, offset=offset)
+            else:
+                stamp = star.drawImage(wcs=chip_wcs_local, offset=offset)
             if np.sum(np.isnan(stamp.array)) > 0:
                 continue
             stamp.setCenter(x_nominal, y_nominal)

observation_sim/mock_objects/Stamp.py

@@ -92,7 +92,7 @@ class Stamp(MockObject):
             else:
                 gal = gal + gal_temp
 
-        stamp = gal.drawImage(method='no_pixel', wcs=chip_wcs_local, offset=offset)
+        stamp = gal.drawImage(wcs=chip_wcs_local, offset=offset)
         if np.sum(np.isnan(stamp.array)) > 0:
             # ERROR happens
             return 2, pos_shear