So the Astroberry, StellarMate, and the software built with my script is all pretty much the same from an astronomy point of view. They all have INDI installed including various drivers, as well as KStars and sometimes other software. You can use INDI/KStars on Raspbian, Ubuntu MATE, or other Linux systems. Astroberry uses Raspbian and StellarMate uses Ubuntu. My script can try to set up either system, but it does require some knowledge in order to decide which parts of the script you would like to use and which parts you can comment out. Also, since not all systems are the same, some issues could be encountered.

As for whether they are up to date, Astroberry, since it is an image with everything installed, could easily be out of date after some time goes by. But I assume that there is some system in Astroberry to update INDI or other software periodically. It is Raspbian, so I don't think it can use the PPA, so I don't know how that software gets updated. StellarMate is based on Ubuntu, so it almost certainly has the PPA installed, so updating indi or kstars to the latest version is pretty simple with just two commands. As for my scripts, if you use an Ubuntu-Mate installation and the script I have for setting that one up, then it uses the PPA as well. I include scripts for updating, or you can just use the update commands I mentioned earlier. If you use Raspbian with my script, then to update it, you could run my update script, but that does involve rebuilding the latest versions.

It sounds to me like you encountered some sort of issue in the build if the kstars-build folder is small. It is not that small. My recommendation to you probably would be to either use StellarMate OS on your PI, or maybe try Ubuntu Mate and run my other script? I would be glad to help you try to find out what went wrong with your Raspbian run, but it sounds like you don't have any info about what happened during the build.

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