You can just download the Debian package for armhf (32bit) and arm64 (64 bit). No compilation required. If you want to compile, install Lazarus and load astap_linux.lpi then compile. Binaries 64 bit: sourceforge.net/projects/astap-program/f...p_arm64.deb/download 32 bit: sourceforge.net/projects/astap-program/f...p_armhf.deb/download You can associate it to .fits or for quick scrolling you have this option: