Australian Square Kilometre Array Pathfinder

The Australian Square Kilometre Array Pathfinder (ASKAP) is a radio-telescope array of 36 12-meter dishes in Australia, at the Murchison Radio-astronomy Observatory (MRO). It is used for research and serves as a pilot for the Square Kilometre Array (SKA). Construction began in 2009, with the dishes completed and first light in 2012, after which various kinds of technology underwent testing and verification, allowing some science observation, with full scientific operation beginning in 2022-2023. Most of its time is devoted to a number of radio surveys. Among the surveys in progress or planned:

• EMU for Evolutionary Map of the Universe.
• WALLABY for Widefield ASKAP L-band Legacy All-sky Blind Survey.
• FLASH for First Large Absorption Survey in HI.
• VAST for Variables and Slow Transients.
• GASKAP-HI for Galactic ASKAP Spectral Line Survey-HI (mapping 21-cm-line absorption in the Milky Way).
• GASKAP-OH for Galactic ASKAP Spectral Line Survey-OH (mapping hydroxyl).
• POSSUM for Polarization Sky Survey of the Universe's Magnetism.
• DINGO for Deep Investigations of Neutral Gas Origins.
• CRAFT for Commensal Real-time ASKAP Fast Transients survey (e.g., fast radio bursts).
• COAST for Compact Objects with ASKAP: Surveys and Timing (discovering and studying pulsars).