Was eyeballing a thread about stacking on the Seestar, got me wondering what ZWO was using for on-unit stacking, grabbed the 1.7.0 update and went nosing around.

root@Hadriel:/mnt/c/Users/billn/Downloads/ASIAIR# find . -name zwoair_imager | xargs grep extract.cpp
Binary file ./ASIAIR_2.1/assets/patch/deb/home/pi/ASIAIR/bin/zwoair_imager matches
Binary file ./Seestar_1.6.1.apk.d/assets/deb/home/pi/ASIAIR/bin/zwoair_imager matches
Binary file ./Seestar_1.7.0.apk.d/assets/deb/home/pi/ASIAIR/bin/zwoair_imager matches
root@Hadriel:/mnt/c/Users/billn/Downloads/ASIAIR# strings ASIAIR_2.1/assets/patch/deb/home/pi/ASIAIR/bin/zwoair_imager | grep extract.cpp
buf->bptr (bufw*bufh=%lu elements) at line %d in module ./sep/extract.cpp !
cat->thresh (nobj=%lu elements) at line %d in module ./sep/extract.cpp !
cat->npix (nobj=%lu elements) at line %d in module ./sep/extract.cpp !
cat->tnpix (nobj=%lu elements) at line %d in module ./sep/extract.cpp !
cat->xmin (nobj=%lu elements) at line %d in module ./sep/extract.cpp !
cat->xmax (nobj=%lu elements) at line %d in module ./sep/extract.cpp !
cat->ymin (nobj=%lu elements) at line %d in module ./sep/extract.cpp !
cat->ymax (nobj=%lu elements) at line %d in module ./sep/extract.cpp !

So that's SEP (github.com/kbarbary/sep), which is LGPLv3. It's statically compiled, though, not brought in as a lib.

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