Examples of the simulated galaxies at different noise levels to help visualise varying S/N levels, and well resolved in contrast to barely resolved galaxies. Top: cut-out of the well resolved sample of images for S/N ≈ 100 (left) and S/N ≈ 10 (right). Bottom: cut-out of the barely resolved sample of images for S/N ≈ 100 (left) and S/N ≈ 10 (right). The shape of the barely resolved galaxies is rounded by the PSF and for low S/N both well resolved and barely resolved galaxies the shapes are very much affected by noise.
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