[evlatests] Pointing Gone Wild -- May 2020 Edition

[Dave Parker]

When you can get the info from your office I would be interested in how 
many of those antennas have had bearing changes and then seed if we have 
anything to compare before and after bearing change. I realize we may 
not be able to find a lot of before data on many antennas.

Dave

On 7/1/2020 2:22 PM, Ken Sowinski via evlatests wrote:
> On Wed, 1 Jul 2020, rperley via evlatests wrote:
>>
>> The amplitude of this effect (notably ea25 in the 2020 data, and on 
>> ea18 in the 2019 data) suggests that this is a software-driven offset 
>> -- the antennas, for whatever reason, were told to move off source.  
>> But perhaps somebody can provide an alternate explanation.
> 
> Sure.  Atl east for ea25.  Ever since this antenna had a bearing
> replacement years ago we have been struggling to explain anomalous
> poiting associated with a particular azimuth.  There is a small Az
> range where the pointing changes by about an arc-min, as you say,
> mostly in elevation.  ea25 is the best example, but there are other
> antennas with similar behavior.  Notes aobut others are in my
> inaccessible office.
> 
> Ken
> 
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