Today Acorn 7 was released. Acorn has a new interface and is now fully optimized for Apple silicon Macs. We have updated our FITS/XISF/SBIG Acorn image plugin today as well, and like Acorn 7 it now also runs natively on Apple silicon.
After installing the plugin, you can open FITS, XISF and SBIG images with Acorn as easy as a JPEG or TIFF while maintaining the dynamic range in your images. The plugin is free, but you do need Observatory and Acorn to use it. It’s a great addition to Observatory’s Quick Look and Spotlight plugins for the same image formats.
More information about the plugin and the download link can be found in the User Guide. Full release notes are here.