F202A

    Version as of 16:09, 12 Dec 2024

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    F202A Correlation Report

    General information

    Two frequency modes were tested in this experiment. The first 6 scans utilized a special 88 GHz frequency setup since it is used in one of the experiments in this session. Starting from the scan 7 normal 3mm 86GHz frequency setup was used.

    Fringes

    Station Code Fringes Plots Comments
    Ef B yes    
    On X yes    
    Ys Y yes   No fringes in 88 GHz part. In 86 GHz part fringes of the same strength in cross pols as in parallel pols, i. e. apparent linear polarization. Reason was quickly found, quarter-wave plates not installed. Fixed before the science part of the session. 
    Mh Z yes    
    Pv P yes   No fringes found in the whole f202a. The reason was apparently the wrongly set clock, possibly for one second, although correlations with +/-1 sec offsets also did not produce fringes, After the clock reset data from a c202a scan were transferred to confirm EfPv fringes, and they were successfully found, see plots.  

    Notes