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correlator:records:vc160

vc160

Correlation notes

Output files:

File name Description Start date, UT range Polarizations # subbands (AIPS IFs) Bandwidth per IF (MHz) Spectral channels per IF/pol Corr. int. time (s)
VC160.0.FITS 2011-11-14, 0/14:09:21 - 0/16:59:59 RR LL RL LR 2 16.0 MHz 64 2.0

Analysis notes

This was a test of the Ceduna phase problem to see if the maser was at fault. The maser was swapped out for a rubidium to compare performance:

14:45 - 15:30 Ceduna records with the H maser

15:45 - 16:40 Ceduna records with the Rubidium

16:50 - 17:00 Ceduna records with the H maser again.

It turns out that there was no phase problem during the experiment when using the maser so this was not a useful time to do the test. It is also noted that the phase with the rubidium was very poor (coherence time much less than a minute), so it is doubtful that anything would have been learned even if the phase problem had been occurring during the experiment. Fingers crossed that recent maintenance has fixed the problem…

Brief Data Summary

Scan listing

Plots of autocorrelations

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Plots of uncalibrated amplitude and phase against frequency

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Plots of uncalibrated amplitude and phase against time

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Amplitude corrections from ACCOR

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Fringe-fit delay solutions

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Fringe-fit phase solutions

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Fringe-fit rate solutions

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Plots of Amplitude and phase against frequency with fringe-fit solutions applied

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Plots of Amplitude and phase against time with fringe-fit solutions applied

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correlator/records/vc160.txt · Last modified: 2014/11/11 18:08 (external edit)