Table 3: Photometry of the objects in the vicinity of PKS 1830-211, along with their 1-$\sigma $ error bars. An additional error bar of 0.05 mag on the photometric zero point is not included here.
Object J H
Quasar A $18.04\pm0.05$ $16.36 \pm 0.05 $
Quasar B >23.0 $22.12 \pm 0.10 $
Star S1 $17.57 \pm 0.05$ $16.72 \pm 0.05 $
Star P $21.76 \pm 0.10$ $20.93 \pm 0.05 $
Lens G $22.76 \pm 0.20$ $21.25 \pm 0.10 $


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