/usr/share/sextractor/gauss_2.5_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 gaussian PSF with FWHM = 2.5 pixels.
0.034673 0.119131 0.179633 0.119131 0.034673
0.119131 0.409323 0.617200 0.409323 0.119131
0.179633 0.617200 0.930649 0.617200 0.179633
0.119131 0.409323 0.617200 0.409323 0.119131
0.034673 0.119131 0.179633 0.119131 0.034673
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