Table 1
Values of the CAPM coronagraph parameters optimized for different spectral bandwidths and averaged intensity results at different separations.
| Parameters | Bandwidth in % | ||||||
| 5 | 10 | 20 | 25 | 30 | 40 | 50 | |
|
|
|||||||
| d1 in λ0/D | 0.877 | 0.881 | 0.879 | 0.874 | 0.880 | 0.883 | 0.876 |
| d2 in λ0/D | 1.424 | 1.430 | 1.438 | 1.445 | 1.455 | 1.479 | 1.497 |
| OPD1 in λ0 | 0.311 | 0.312 | 0.311 | 0.309 | 0.312 | 0.313 | 0.314 |
| OPD2 in λ0 | 0.675 | 0.677 | 0.679 | 0.678 | 0.684 | 0.690 | 0.691 |
| ω1,λ at λ1 | –2.401 | –2.390 | –2.422 | –2.420 | –2.402 | –2.332 | –2.182 |
| ω1,λ at λ2 | –2.402 | –2.391 | –2.371 | –2.368 | –2.374 | –2.404 | –2.417 |
| ω1,λ at λ3 | –2.424 | –2.424 | –2.420 | –2.404 | –2.397 | –2.392 | –2.320 |
| ω1,λ at λ4 | –2.471 | –2.488 | –2.510 | –2.509 | –2.522 | –2.502 | –2.417 |
| ω1,λ at λ5 | –2.484 | –2.536 | –2.628 | –2.668 | –2.674 | –2.741 | –2.705 |
| ω2,λ at λ1 | 2.289 | 2.282 | 2.474 | 2.508 | 2.621 | 2.823 | 2.924 |
| ω2,λ at λ2 | 2.275 | 2.246 | 2.170 | 2.135 | 2.207 | 2.349 | 2.454 |
| ω2,λ at λ3 | 2.340 | 2.328 | 2.282 | 2.193 | 2.176 | 2.118 | 1.847 |
| ω2,λ at λ4 | 2.492 | 2.534 | 2.567 | 2.538 | 2.582 | 2.493 | 2.225 |
| ω2,λ at λ5 | 2.530 | 2.679 | 2.954 | 3.072 | 3.104 | 3.305 | 3.241 |
| βλ at λ1 | –0.229 | –0.235 | –0.245 | –0.251 | –0.259 | –0.272 | –0.265 |
| βλ at λ2 | –0.229 | –0.231 | –0.233 | –0.234 | –0.240 | –0.251 | –0.255 |
| βλ at λ3 | –0.228 | –0.230 | –0.227 | –0.224 | –0.225 | –0.224 | –0.215 |
| βλ at λ4 | –0.229 | –0.230 | –0.228 | –0.226 | –0.226 | –0.221 | –0.214 |
| βλ at λ5 | –0.229 | –0.232 | –0.236 | –0.239 | –0.240 | –0.249 | –0.252 |
| level at 1.5 λ0/D | 8.8 × 10-5 | 9.5 × 10-5 | 1.1 × 10-4 | 1.3 × 10-4 | 1.4 × 10-4 | 1.7 × 10-4 | 2.0 × 10-4 |
| level at 2.0 λ0/D | 6.6 × 10-6 | 7.4 × 10-6 | 9.9 × 10-6 | 1.2 × 10-5 | 1.3 × 10-5 | 1.8 × 10-5 | 2.4 × 10-5 |
| level at 3.0 λ0/D | 5.2 × 10-8 | 7.6 × 10-8 | 1.6 × 10-7 | 2.2 × 10-7 | 2.4 × 10-7 | 3.8 × 10-7 | 7.2 × 10-7 |
| level at 5.0 λ0/D | 1.1 × 10-8 | 1.2 × 10-8 | 1.9 × 10-8 | 2.2 × 10-8 | 2.9 × 10-8 | 3.8 × 10-8 | 7.1 × 10-8 |
| level at 7.0 λ0/D | 5.9 × 10-9 | 6.3 × 10-9 | 8.3 × 10-9 | 9.0 × 10-9 | 1.2 × 10-8 | 1.4 × 10-8 | 2.5 × 10-8 |
Notes. The DZPM phase steps are given in optical path difference (OPD). Five wavelengths from λ1 to λ5 have been chosen within the spectral bandwidth Δλ, centered on λ3 = λ0, and equally spaced by Δλ/5.
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