import ipywe.imagedisplay as imgdisp
import numpy as np

xg,yg = np.mgrid[1:500, 1:500]

class Image:
    def __init__(self, x0, y0, sigma):
        self.data = np.exp(-((xg-x0)**2+(yg-y0)**2)/2/sigma**2)

images = [Image(250., 250., s) for s in np.arange(5, 30, 1.)]

imgdisp.ImageDisplay(images[20], 300, 300)