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Table 2.
Flux ratios measured on the optical images.
| Band | Dataset | Epoch | Δmag |
|
|---|---|---|---|---|
| B − A | C − A | |||
| g | CFHT | 2004-07-23 | −0.3 (0.4) | −0.2 (1.0) |
| r | PS | 2009-2014 | 0.4 (0.2) | 0.5 (1.0) |
| i | PS | 2009-2014 | 0.6 (0.4) | 0.5 (1.2) |
| i | LS | 2020-2021 | 0.5 (0.3) | 0.6 (1.1) |
| Y | VHS | 2014-04-15 | 0.4 (0.6) | 0.3 (1.1) |
| J | VHS | 2014-04-15 | −0.1 (0.5) | −0.6 (0.6) |
| Ks | VHS | 2014-04-15 | −1.7 (−0.6) | −2.1 (−0.9) |
Notes. Two values are reported: the first stems from a STARRED deconvolution (PSF + wavelet background ring). The second, in parenthesis, stems from standard PSF photometry that sums the flux of the quasar images and the flux of the underlying arc (see text).
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