To be clear, they were using the coronagraph: https://arxiv.org/pdf/2305.03789.pdf https://arxiv.org/pdf/2305.03789.pdf >The 23.0 µm coronagraph of MIRI uses a

To be clear, they were using the coronagraph: https://arxiv.org/pdf/2305.03789.pdf https://arxiv.org/pdf/2305.03789.pdf >The 23.0 µm coronagraph of MIRI uses a classic Lyot mask to achieve high contrast imaging near bright sources. The mask is rather large, providing an inner working angle (IWA) of ∼ 3.3λ/D, i.e., ∼ 2. Our data is the first complete reference PSF subtracted set of observations taken with JWST using this mode. There's some residual light and diffraction effects around the Lyot mask which they have manually deleted.