[evlatests] planet tracking

[Bryan Butler]

yeah, i tried that last fall using 3C286, with mixed results.  it might 
be a good idea to try it again...

	-bryan



Walter Brisken wrote:
> 
> Bryan,
> 
> for testing purposes, would be be smart to make a fictitious moving 
> object centered around a very bright point source with excursions of ~1 
> beam? This way one could use power and phase measurements on short 
> baselines to verify the antenna's motion and the delay center tracking 
> respectively?.
> 
> On Tue, 2 Sep 2008, Bryan Butler wrote:
> 
>>
>> i've tested this again, at K-band.  it's clear that there is an offset
>> in the "polynomial" style tracking.  it's harder to tell with the
>> internal ephemeris style, because i can't self-cal and the data was
>> taken during day time last week so the phase is not what one might like
>> for such an experiment.  if i can get some time, i will try this again
>> with jupiter, which is at least an early nighttime object, to see if i
>> can hit better phase conditions.  i'll summarize all of this at this
>> morning's test meeting.
>>
>>     -bryan
>>
>>
>> Bryan Butler wrote:
>>> i tested planet tracking yesterday by looking at venus at X-band.  as
>>> far as i can tell, both modes of tracking, with the internal ephemeris,
>>> and by specifying a polynomial, work, and work equally well.
>>>
>>> i would like to do one more test, at higher frequency, before signing
>>> off on this, but it looks pretty good at this point.
>>>
>>>     -bryan
>>>
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