CHEOPS in-flight performance - A comprehensive look at the first 3.5 yr of operations

Open Access

Fig. 2

CHEOPS PSF in flight. The PSF shown here corresponds to a star in the centre of the CCD. The white circle shows the region inside which 90% of the energy is concentrated. This corresponds to a radius R₉₀ = 16.5 px. The triangular shape of the PSF is related to the mount of the primary mirror.

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