[daip] UTC for VLBA data?

Leonia Kogan lkogan at nrao.edu
Wed Aug 4 13:27:40 EDT 2010


Hello,

I created the EOPS option in CLCOR. This option was created especially 
for the time intervals when UTC-UT1 was not calculated correctly by the 
  VLBA correlator. Vivek Dhawan may give you a better answer on your 
question about the times.

Leonid Kogan
Bill Peterson wrote:
> Hello,
> 
> Is VLBA data by default timestamped in UTC? As I understand it, VLBAEOPS 
> (or CLCOR run with the EOPS parameter) will perform corrections for 
> errors in UTC-UT1, but I assume that the corrections are estimated by 
> the VLBA correlator, as are the Earth Orientation Parameters.
> 
> Further, was there a period of time during which the corrections for 
> UTC-UT1 might not be calculated correctly for some archive data 
> (specifically data from November 1995)?
> 
> Thanks!
> 
> Bill Peterson
> 
> 
> 
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