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Table 1.

Gridding parameter values.

Name Default Fig. 3 Minimum
Oversampling 63 16535 4095
Kernel size 7 15 3
w layers 32 1000 500
Kernel function Sinc × KB Sinc × KB Sinc × KB
Padding 1.2 2 1

Notes. Columns 2, 3, and 4 specify the default settings in WSCLEAN; the settings used in Fig. 3 (unless otherwise specified); and the minimum settings that are required to have an excess power of at most 0.1 mK in the range k = 0.5–1 h Mpc−1, respectively. The latter holds for both the foreground-avoidance and the foreground-subtraction approach.

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