[evlatests] `Closure' return

Rick Perley rperley at aoc.nrao.edu
Mon Nov 21 13:33:29 EST 2005


    I overlooked an important piece of information on the `closure' problem
reported this morning.

    The high fringe amplitude seen only on baseline 14 x 16 at C-band was
evident *only* while observing the calibrator 3C84.  No such fringes were
seen while on nearby cold sky.  Hence, the originating cause is most
unlikely to be RFI.  It is more likely an aliased response. 

    We need to confirm the effect, within the next available test time 
(tomorrow).





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