# Visualizer¶

If you want to see what your exoplanet might look like in transit, the Visualizer module is for you! Visualizer uses the absorption profile calculated by the transit depth calculator, which you can get using:

calculator = TransitDepthCalculator()
wavelengths, depths, info = calculator.compute_depths(Rs, Mp, Rp, T, full_output=True)


Then, to draw an image:

color_bins = 1e-6 * np.array([
[4, 5],
[3.2, 4],
[1.1, 1.7]])
visualizer = Visualizer()
image, m_per_pix = visualizer.draw(info, color_bins, method='disk')


This maps all wavelengths between 4–5 microns to red, while 3.2–4 microns maps to green and 4–5 microns maps to blue. The draw function returns an image and an image scale, in meters per pixel. The image can be displayed with pyplot:

plt.imshow(image)


The ‘method’ argument can either be ‘disk’ or ‘layers’. The difference is illustrated in the example images below. For purely aesthetic purposes, we have also made the star light a pale yellow color by passing [1,1,0.8] to the star_color argument of draw.

55 Cnc e as a 1D profile

55 Cnc e as a disk transiting a yellow star