It looks like CR3 support is in libraw's latest snapshot that was released in October. The current stable release looks like it is 0.19.5 however the repos contain 0.17. Is there a best practice for upgrading just the libraw piece in conjunction with the rest of the stellarmate packages? I am comfortable downloading the snapshot and compiling it from source, however im not as familiar with Unbuntu as I am with other RHEL and RHEL clones. Is there a best way to verify that the system is using the snapshot, perhaps a "which libraw" command or a way to add the snapshot to a different path, and fallback by removing that path from $PATH, in order to avoid a complete restore from backup? I am curious to see if it works with CR3. This is currently my main camera, I would like to use it to compare to my previous 1300D aps-c photos.
There is a small work around however it looks. If I use my guide scope from polar alignment and object centering, then switch it over to guiding. I can use the EOS R by setting the preview to no, and the setting 1 to 1 photo sequences. Example setting 30 different individual single 3 minute exposures. This will still save each exposure to the cameras SD card, which can be processed. It is a pain not having a preview and test shots, especially considering my guid scope and cam are considerably wider FOV than the make scope, but it does work until libraw can be updated.