07mar21 on/off casA.. ripple in cal


What we did:

       Spectra taken 24mar21  showed large 64MHz ripples when the all deflection was used to remove the IF bandpass.  On
7apr21  a  2 minute on,off position  switch was done on casA. Plotting (spcPosOn-spcPosOff)/spcPosOff showed no ripple.
Plotting spcCalOff/(spcCalOn-spcCalOff) for data taken after the position switch still showed the ripple.
I also computed the sefd using a flux value o 620 Jy for  casA (from chris salter).

When  processing the spectra:

The plots show the position switch and calon,off spectra (.ps) (.pdf)

What we were measuring.


processing: x101/210407/tstonoff.pro

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