diff --git a/metaprop_asm.py b/metaprop_asm.py
index e0ba4d7..193dcea 100644
--- a/metaprop_asm.py
+++ b/metaprop_asm.py
@@ -6,7 +6,7 @@ k0 = 2 * np.pi / wavelength
 
 unit_cell_pitch = 400e-9
 
-Nx = 1024*4
+Nx = 1024*8
 Ny = Nx
 S = Nx * Ny