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Table 1
Parameters used to apply COFFEE on SPHERE.
| Light source | Internal calibration source, wavelength λ = 1589 nm |
| SPHERE entrance pupil | Unobscured circular pupil, diameter Du = 40 cm |
| Coronagraph | Apodized Lyot Coronagraph (ALC), focal plane mask angular diameter d = 4.52λ/D |
| Lyot stop pupil | Obscured circular pupil (see Fig. 2), diameter Dd = 0.96Du |
| IRDIS image size | 200 × 200 pixels |
| Sampling | 2.75 pixels per λ/D |
| Detector noise | σdet = 1 e− |
| Exposure time | 0.6 s per acquisition. Each image is averaged over 100 acquisitions |
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