Table 1.
Parameters of the PSF used for the correction of the two regions.
| Parameter | Region 1 value | Region 2 value | Description |
|---|---|---|---|
| Fy0, c | 2.0 arcsec | 2.0 arcsec | PSF core y axis FWHM before rotation or any non-Gaussian exponentiation. |
| Fλ0, c | 0.95 Å | 0.95 Å | PSF core λ axis FWHM before rotation or any non-Gaussian exponentiation. |
| θc | 15° | 20° | PSF core rotation angle in degrees. |
| γc | 1.5 | 1.5 | PSF core non-Gaussian exponent. |
| Fy0, w | 10.0 arcsec | 10.0 arcsec | PSF wing y axis FWHM before rotation or any non-Gaussian exponentiation. |
| Fλ0, w | 2.5 Å | 2.5 Å | PSF wing λ axis FWHM before rotation or any non-Gaussian exponentiation. |
| γw | 1.0 | 1.0 | PSF wing non-Gaussian exponent (1 means Gaussian). |
| ww | 0.2 | 0.2 | Wing weight (core weight is 1.0 − ww). |
Notes. “Region 2” is the second region discussed in Sect. 4.2 (Region 1 is shown in Fig. 1 and Region 2 in Fig. 15). The PSF size parameters had to be converted to natural detector plane units (microns) before the PSF was evaluated; otherwise, they are dimensionally inconsistent. The conversion factors are 18/1.1 microns per arcsecond and 200 microns per Å (i.e., Å in wavelength).
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