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The
ASKAP Update for January
reports on activities during the
holidays, our current status, plans to resume full survey
operations, and considerations being given to how ASKAP
might be used to study space weather.
Over the Christmas/New Year period, ASKAP’s operating modes and survey
pool were limited to maximise reliability. The focus was on observing
a full-sky epoch of RACS-low using a different beam "footprint" (in
order to match RACS-mid and RACS-high), and maintaining the observing
cadence required to meet VAST’s science goals. Successful observations
were able to be carried out at an observing efficiency of 94.8% over
the full shutdown period.
The image above shows the RACS-low3 noise map as of January 18th,
with a median RMS of 172 micro-jansky per beam for the region processed.
For comparison, RACS-low2 (in 2022) had a median RMS of 184 μJy/beam and
RACS-low1 (in 2020) had a median RMS of 230 μJy/beam.
Particular fields with high noise levels
are associated with the presence of bright, extended sources.
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