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The
ASKAP
update for June reports on the status of ongoing survey operations, VAST scheduling,
development priorities, the first RACS-mid data release, and solar interference.
The Sun is a particularly bright source that, even though it sits outside the field of
view during any day-time observation, can be detected in the sidelobes of the PAF beams.
The active Sun appears as a
collection of relatively compact sources within the solar disk, but
these can be quite dynamic and hard to characterise. The image above shows
data from a recent POSSUM observation, split into 1- hour integrations
and re-imaged in the direction of the Sun
to show its impact before (panels 1-5), during (panel 6) and after (panels 7-10) sunrise.
Note the complicated structure in these images prior to deconvolution, most likely
resulting from small active regions on the surface of the Sun.
(Image credit: Stefan Duchesne)
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