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Table 3.

Final image reconstruction parameters.

λ Reg. (a) μ(b) FOV (c) Npx Obj. Mask (d) Cost (e) χ2(f)
[μm] Func. [mas] [mas] Func. [V2,ϕT3]
3.7 ± 0.1 1 0.01 128 128 120 1 [1.31,0.4]
4.7 ± 0.1 1 0.01 128 256 50 1 [1.14,0.4]

Notes.

(a)

The IRBis regularization function;

(b)

The weight on the regularization function (also known as the hyperparameter);

(c)

The field of view of the reconstructed image;

(d)

The radius of the object mask employed by IRBis in mas;

(e)

The cost function used in reconstruction, as described in Eq. (1) and in Hofmann et al. (2022);

(f)

The χ2 terms from the final images entering Eq. (1) for the squared visibilities and closure phases, respectively.

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