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

[Jan Wagner]

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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