2018 April

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Apr 02

14:01 UT This morning after the low-frequency receiver observation, I updated the Ant14-lo delay by 4 ns, so the solar observations will differ from the phase calibration by that amount, for the low-frequency receiver calibration.

19:20 UT Oops. I inadvertently updated the high-frequency receiver delay on Ant 14. This does not affect solar observations, but did mess up the phasecals for today. I have now updated both high- and low-receiver delays. My high-receiver changes affect more than just Ant 14, since many of the delays were off by 0.1 ns from their optimal value, so it will be simplest just to use the end-of-the-day refcal for calibration of today's data.