I cant find any extension named “slicerastro“ extension inside extension manager.Can somebody help?
SlicerAstro currently has no active funding, and I maintain it in my free time. Unfortunately, it’s not compatible with the latest Slicer Stable and Preview versions. I plan to update SlicerAstro extension (probably around the end of the year), but for the moment, you can try using the binaries of the custom SlicerAstroApp (with an older version of Slicer) available at the following link: Releases · Punzo/SlicerAstroApp · GitHub . Full wiki is at Home · Punzo/SlicerAstro Wiki · GitHub
Please let me know if they work for you.
Davide.