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Table 1

Input and fitted ArcEllipse and Sérsic parameters for an arc created with PaintArcs using the ArcEllipse prescription and a Sérsic surface brightness profile.

Parameter True value Recovered value

x0 (pix) 100.00 98.50
y0 (pix) 100.00 96.88
rc (pix) 50.00 52.85
re (pix) 5.20 5.96
θ0 (rad) 0.70 0.72
I0 (counts) 100.00 102.81
n 1.00 1.06
e 1 0.90 0.88
e 2 0.80 0.77

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