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Table 2
COFFEE: simulation parameters for studying the aliasing error.
| Simulation | ||
|
|
||
| Image size | 93 × 93  (128 × 128 pixels, oversampling
factor: 1.38) |
|
| Light spectrum | monochromatic (λ = 635 nm) | |
| Aberration upstream of the coronagraph (φu) | WFE = 80 nm rms | |
| Aberration downstream of the coronagraph (φd) | WFE = 20 nm rms | |
| Zernike basis used for φu and φd simulation | 350 Zernike polynomials | |
| Incoming flux | 5 × 106 photons | |
| Noise | photon noise, detector noise (σdet = 1e−) | |
|
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||
| COFFEE: phase estimation | ||
|
|
||
| Zernike basis used for φu and φd reconstruction | from 15 to 275 Zernike polynomials |
|
| Regularization metric | With and without | |
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