[Difx-users] generate fixed JPLEPH calc9 file for calcif2? {External}

[Michael Dutka]

Hi Jan,
We just updated the tables dfixcalc11 uses with more stations they're
attached here.  Hope these help!
-Mike



On Tue, Jan 21, 2025 at 9:49 AM Jan Wagner via Difx-users <
difx-users at listmgr.nrao.edu> wrote:

> Hi list,
>
> the old CALC 9.1 model behind DiFX 'calcif2' comes with two data
> files, JPLEPH and Horizons.lis.
>
> Unfortunately, the file JPLEPH file is "broken" in the sense that the
> ephemerides data contained in it ended already on 12th January 2025.
>
> For VLBI experiments after that date, the calcif2 processing needed prior
> to correlation does not work - not even for VLBI experiments without local
> planetary objects.
>
> Perhaps someone on the list would be able to generate a corrected file?
>
> John Benson created the current file at NRAO more than 10 years ago.
> Unfortunately, he is not at NRAO anymore, perhaps retired.
>
> A move to difxcalc11 to replace calcif2 is possible, but the ocean loading
> tables in it are incomplete. They are missing a lot of stations, difxcalc11
> complains. It'd be more convenient if calcif2 could work for a while longer
> - with a fixed JPLEPH file.
>
> Many thanks,
> kind regards,
> Jan
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>


-- 
Dr. Michael S. Dutka
US Navy (civilian)
USNO Phone Number- 202-762-0242
Cell- 301-996-3588
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