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VLA to NIST

Very Large Array to NIST clock corrections (TEMPO2)

This file is pulled from the TEMPO2 repository and may not be fully up-to-date.

   
File T2runtime/clock/vla2nist.clk
Authority temporary
URL in repository https://raw.githubusercontent.com/ipta/pulsar-clock-corrections/main/T2runtime/clock/vla2nist.clk
Original download URL https://bitbucket.org/psrsoft/tempo2/raw/HEAD/T2runtime/clock/vla2nist.clk
Format tempo2
Bogus last correction False
Clock file start 1990-10-27 MJD 48191.2
Clock file end 1993-11-13 MJD 49304.0
Update interval (days) 7
Last update attempt 2026-05-08
Last update result Unchanged

Log entries from the last few update attempts:

2026-03-06 20:56:04.875 - Unchanged
2026-03-13 20:59:55.949 - Unchanged
2026-03-20 20:57:38.008 - Unchanged
2026-03-27 21:04:30.256 - Unchanged
2026-04-03 21:02:04.006 - Unchanged
2026-04-10 21:02:52.184 - Unchanged
2026-04-17 21:10:24.251 - Unchanged
2026-04-24 21:13:38.407 - Unchanged
2026-05-01 21:14:44.973 - Unchanged
2026-05-08 21:34:53.179 - Unchanged

Full log

Leading comments from clock file:

# From old tempo time_vla.dat:
# awk '$1<50000 {printf("%11.5f %10.5e\n",$1,($3-$2)/1.e6)}' time_vla.dat
#  > $TEMPO2/clock/vla2nist.clk
#

All clock corrections:

plot of all clock corrections

Recent clock corrections:

plot of recent clock corrections