Install SExtractor #

I chose to install it from source:

https://astromatic.github.io/sextractor/Installing.html

To run sh autogen.sh, install autoconf first:

sudo apt install autoconf

To run ./configure:

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sudo apt install libcfitsio-dev libatlas-base-dev libfftw3-dev libtool

After make, the compiled executable file will be at ./src/sex.

Install PSFEx #

Almost the same:

https://psfex.readthedocs.io/en/latest/Installing.html

Install GalSim #

https://github.com/GalSim-developers/GalSim

I didn’t compile GalSim; I installed it in a Conda environment instead:

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conda install -c conda-forge galsim

Usage #

TBW—just like PSFEx. XD