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Fig. B.2.

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Surface brightness profile of NGC1052-DF2 using different telescopes: INT (Montes et al. 2021), DECaLS (this work), Dragonfly (Keim et al. 2022), and Gemini (this work). Montes et al. (2021) derive the profiles with a fixed ellipticity and PA. In the case of Gemini (dark red points), DECaLS, and Dragonfly data, the PA and ellipticity vary freely. We also show with green data points the surface brightness profile where ellipticity and PA are fixed to values representative of the outer parts of the galaxy (see the main text for details) for Gemini data.

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