/usr/share/sextractor/gauss_3.0_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 gaussian PSF with FWHM = 3.0 pixels.
0.092163 0.221178 0.296069 0.221178 0.092163
0.221178 0.530797 0.710525 0.530797 0.221178
0.296069 0.710525 0.951108 0.710525 0.296069
0.221178 0.530797 0.710525 0.530797 0.221178
0.092163 0.221178 0.296069 0.221178 0.092163
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