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Table 2.
Typical range of PSF parameters for OOMAO simulations and SPHERE/ZIMPOL instrument, lower bounds and values used as initial guess for the minimizer.
| Param. | Typical range | Lower bound | Guess | Unit |
|---|---|---|---|---|
| r0 | 5 − 30 | eps | 18 | cm |
| αx | 10−2 − 10−1 | eps | 5 × 10−2 | m−1 |
| αy | 10−2 − 10−1 | eps | 5 × 10−2 | m−1 |
| β | 1.1 − 3 | 1 + eps | 1.6 | − |
| θ | 0 − π | − | 0 | rad |
| C | 10−3 − 10−2 | 0 | 10−2 | rad2 m2 |
| A | 10−1 − 10 | 0 | 2 | rad2 |
Notes. Typical ranges are indicative and may vary according to the considered instrument. The value “eps” denotes the machine precision. Parameters do not have any upper bound.
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