Welcome to the help page of the Arecibo Observatory Fourier Transform Machine (AOFTM) and its user interfaces, the OpenLook compliant <aoftm> data acquistion program, the quicklook data processing program <postproc> and publicly-available code that allows disk and magnetic tape data to be unpacked and piped to user programs. ... Other links document the history and development of the AOFTM, and describe the data format and available data unpacking software. ... HARDWARE DESCRIPTION . ...