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Table 1

Comparison of the brighter-fatter effect in the X and Y direction that are observed on CCD E2V-250, DECam and MegaCam.

Instrument – wavelength σ Δσ@100 ke σ Δσ@100 ke
(pix) (pix) (pix) (pix)

CCD E2V-250–550 nm 1.594 0.047 ± 0.002 1.622 0.052 ± 0.003
CCD E2V-250–900 nm 2.042 0.037 ± 0.0005 2.048 0.043 ± 0.0007
DECam–r-band (~640 nm) 1.709 0.022 ± 0.001 1.944 0.024 ± 0.001
MegaCam–r-band (~640 nm) 1.980 0.005 1.960 0.006

Notes. Comparison between the two columns shows that the amplitude of the broadening is steeper in the Y direction than in the X direction. It should be noted that the values that are estimated for the MegaCam instrument are arguable because they depend on the range where they are adjusted.

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