[daip] CLCOR position shifting question

[Leonia Kogan]

Thank you

Leonia

Mark Reid wrote:
> Leonia Kogan wrote:
>> Mark,
>>
>> You can argue my previous message argument about the instrumental delay,
>> considering your data have zeros for those delays.
>>
>> Even in this case:
>> CLCOR calculates the phase correction for  each IFs as production of 
>> the calculated delay and the frequency difference relatively the first 
>> IF.
>> 1as position shift is large enough to create many turns of phase between
>> the neighbor IFs especially for VLBI (is it VLBI?). CLCOR brashes 
>> aside the integer turns of phase! Therefore the multi band delay (MOD 
>> deltaphi/deltaf, 1) can be smaller than expected.
> 
> That appears to be the case.  When I drop the shift to 0.1 arcseconds, 
> the multi-band delays fit well.
> 
> Thanks for the suggestion.
> 
> Mark
> 
> 
> 
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> Mark J. Reid                 Phone: 617-495-7470
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