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25th of January 2024
Murriyang, the Parkes 64m telescope, pictured during a Long Baseline Array observing session
Long Baseline Array observing session
The angular resolution of a telescope improves with the diameter of the dish, or with the spacing between elements of the array. The technique of Very Long Baseline Interferometry uses antennas spaced hundreds to thousands of kilometres apart to achieve angular resolutions measured in milli-arcseconds. The ATNF telescopes work together with those from the University of Tasmania, the South African Radio Astronomy Observatory, and SpaceOps New Zealand to form the Long Baseline Array. A five-day LBA session wrapped up yesterday, with the projects scheduled being "Characterizing the corona of AB Doradus", "VLBI Astrometry of Radio Stars to Link Radio and Optical Celestial Reference Frames: Southern Sky", "Physics of Gamma Ray Emitting Active Galactic Nuclei", and "Zooming in on a white dwarf around a reignited star". Data is correlated using the DiFX software correlator at the Pawsey Supercomputing Research Centre in Perth. The image above shows Murriyang, the Parkes 64m radio-telescope, as captured by the Parkes Observatory webcam, during the run, showing that clear skies generally prevailed this session!

As January 26th is a public holiday in Australia, the next ADAP will be Monday January 29th.

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