/usr/share/sextractor/mexhat_1.5_5x5.conv is in sextractor 2.4.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | CONV NORM
# 5x5 convolution mask of a mexican-hat for images with FWHM~1.5 pixels.
-0.000109 -0.002374 -0.006302 -0.002374 -0.000109
-0.002374 -0.032222 -0.025569 -0.032222 -0.002374
-0.006302 -0.025569 0.276021 -0.025569 -0.006302
-0.002374 -0.032222 -0.025569 -0.032222 -0.002374
-0.000109 -0.002374 -0.006302 -0.002374 -0.000109
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