This one shouldn't come as a shock, but production of the Canon EOS Ra has ceased and it has been officially discontinued according to a couple of sources. One source has said production of the Canon EOS R has also ended, but that inventory will exist for quite some time.
I have no idea how many of these astro-focused cameras Canon sells, but after releasing a few of them, it must be worth doing. If Canon does another astrophotography camera, I would think it would be an EOS R5a in a couple of years.
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"If Canon does another astrophotography camera, I would think it would be an EOS R5a in a couple of years."
R6a would make much more sense. The resolution of the Ra is already borderline too high for astrophotography. Unless it's aimed at those shooting wide angle starsscapes with tracker.
I expect Canon to release a “R6 mkII A” in 2024/2025. The R6 has better low light capabilities and more importantly a transformed R5 would raise the price for a speciality camera tremendously which would hurt the already low sales numbers. You can’t sell an R5 for 4.500 € and then offer a 2.500 - 3.000 € Astro camera with the same ergonomics. The R6 being at around 2.500 € is a better fit.
XL-Clip-Filter for Canon R / RP Cameras - Clip-Filter
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Please note that Canons Astro-Version "Ra" of the R-body shows strong halos around brighter stars! (Even without any filter) We highly recommend NOT to get a Ra!
I think since then there were some clip filters that mitigate this problem but it shouldn't be there in the first place.
So in my opinion it will not be missed...