just as you described ... works perfectly thank-you.

Ok, git pull of both StellarSolver and Kstars/Ekos 20 minutes ago. Rpi4 4G astroberry. The StellarSolver Tester works very well.

Ekos, Align module crashes consistently right after capturing / loading the image. Internal SEP | Internal Solver | 4 - ParallelSmallScale

It would be useful if I could find any setting combination (Internal Solver or ASTAP or Astrometry) that could solve. Right now I get crashes or no solutions.

Thanks.

Progress !

Since I have all the external index files and I just noticed the "Load all indexes in Memory" is checked in Options Profile Editor.
I am forcing Ekos to run out of memory -- Crash!

Now that it works on the bench we must see it work in the field.

But Yay, progress.

So we were doing some testing on a pi last night and found that there were 2 things that seemed to really be causing the internal solver to crash on the pi, the load all indexes option and not downsampling enough. We found that downsampling by 4 along with not loading all the indexes worked great. We are thinks a default profile specific to the pi is a good idea.

Totally agree. Thanks for the downsample 4 tip I'll try it - as with just 1;1 it is hit or miss (mostly miss).

Downsample 4 = much better.

It would seem that there is a use for 8Gb of Ram on the new Pi4 after all! If only to load all indexes into memory.

Wouldn't you need a 64-bit OS to get to 8Gb ? I'm waiting for a stable 64-bit for the Rpi4.

Ubuntu 20 makes full use of the 8GB in the new Pi4.

Cool. Maybe I'll snag another Rpi4 to test with. Kstars OK compiled for 64-bit?

So as to stay on topic, StellarSolver OK with 64-bit compile?

As of yesterday it did just fine.

I had no problems with building Kstars from the sources, including Stellar Solver, until this morning. I am now consistently getting the same error. Just rebuilt INDI from the source as well, but makes no difference.

How can I fix this?

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/home/ubuntu/Projects/kstars/kstars/kstars/ekos/align/align.cpp: In member function ‘void Ekos::Align::startSolving()’:
/home/ubuntu/Projects/kstars/kstars/kstars/ekos/align/align.cpp:3228:45: error: ‘finished’ is not a member of ‘StellarSolver’
3228 | connect(solver, &StellarSolver::finished, solver, &StellarSolver::deleteLater);
| ^~~~~~~~
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make[3]: *** [kstars/CMakeFiles/KStarsLib.dir/build.make:1604: kstars/CMakeFiles/KStarsLib.dir/ekos/align/align.cpp.o] Error 1
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