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fourierOptics/scripts/SPIE/plot_geometric_distortions.py

65 lines
2.4 KiB
Python

import sys
sys.path.insert(0, '/Users/joost/Dropbox/Werk/PhD/Documents/Published/FourierOptics GitHub release/')
from fourierOptics import *
'''
Author: Joost van den Born, PhD student at University of Groningen
Contact: born@astro.rug.nl
Description: Script to plot the results of the geometric distortion analysis.
Script made for the SPIE manuscript.
'''
if __name__ == '__main__':
plt.rc('font', family='serif')
plt.rc('text', usetex=True)
# Full field
xe = load_variable('../SPIE/data/GD full field (Obscured Airy zern psd)/GD_obscured_PSF_xcentroid_expected_zern_psd.pkl')
ye = load_variable('../SPIE/data/GD full field (Obscured Airy zern psd)/GD_obscured_PSF_ycentroid_expected_zern_psd.pkl')
xp = load_variable('../SPIE/data/GD full field (Obscured Airy zern psd)/GD_obscured_PSF_xcentroid_found_with_wfe_airy_zern_psd.pkl')
yp = load_variable('../SPIE/data/GD full field (Obscured Airy zern psd)/GD_obscured_PSF_ycentroid_found_with_wfe_airy_zern_psd.pkl')
# Shape of the arrays
n = xe.shape[0]
# Reshaping of the arrays so that they can be used for the quiver plot.
X = xe.flatten()
Y = ye.flatten()
dX = xp-xe
dY = yp-ye
dx = dX.flatten()
dy = dY.flatten()
# Two values are comparatively (extremely large), they are set to 0
# to be able to see the other values.
R = (np.sqrt(dx**2 + dy**2) * 100.13151872258219 * 1000) # Magnitude of the shift in micro arcseconds
print('RMS of the PSF shifts: {:.4f} uas.'.format(np.sqrt(np.mean((R)**2))))
# Dummy figure
im = plt.imshow(np.reshape(R, (n,n)))
plt.close()
# Actual plotting of the figure
fig = plt.figure(figsize=(9,7))
ax = fig.add_subplot()
for i in range(len(xe)):
ax.plot(xe[:,i], ye[:,i], 'k-', alpha=0.2, linewidth=.5)
ax.plot(xe[i,:], ye[i,:], 'k-', alpha=0.2, linewidth=.5)
ax.quiver(X,Y,dx,dy, angles='xy', edgecolor='k', facecolor='None', linewidth=1)
ax.quiver(X,Y,dx,dy,R, alpha=1)
ax.set_aspect('equal', adjustable='box')
ax.set_xlabel('x (mm)', fontsize=18)
ax.set_ylabel('y (mm)', fontsize=18)
ax.set_xlim([-340,340])
ax.set_ylim([-340,340])
ax.tick_params(labelsize=18)
cb = fig.colorbar(im, ax=ax)
cb.set_label(label='PSF centroid shift ($\\mu$as)', size=18)
cb.ax.tick_params(labelsize=18)
plt.savefig('./figures/GD_full_field_obscured_Airy_psd_zern.pdf', bbox_inches='tight', transparent=True)
plt.savefig('./figures/GD_full_field_obscured_Airy_psd_zern.png', bbox_inches='tight', transparent=True)
plt.tight_layout()
plt.show()