The final ut1.dat file is held in $TEMPO/clock. Working files and utilities
are held in $TEMPO/clock/ut1_updates.
- You should be able to download the latest ut1.dat from http://www.naic.edu/~pulsar// (Arecibo).
Save it in the ut1_updates directory and put a copy in the clock
- Feb 08: This method is currently broken, from bulletin 139 onwards (they've changed the format and the script need updating!)
Browse to http://hpiers.obspm.fr/iers/bul/bulb/
and download the highest numbered (latest) bulletinb.XXX to the ut1_updates
directory (and any intermediate bulletins that you may need).
Run do.iers.ut1 (in $TEMPO/clock/ut1_update) on each bulletin:
(Make sure any new leap seconds get added to @leapmjd array in do.iers.ut1).
example: do.iers.ut1 bull/bulletinb.128 > ut1.128
Append ut1.xx to $TEMPO/clock/ut1_updates/ut1.dat. First five numbers should
be updates to projected values from previous ut1.xx; last five numbers
should be new (projected) values.
If the last line of ut1.dat is incomplete -- it typically has four entries
instead of the usual six -- then the number of entries ('4') should be
in column 60 of the last line. Column 60 of other lines should be blank.
Run check.ut1 to do a 'sanity check' on the new ut1.dat file
Copy the updated file to $TEMPO/clock/ut1.dat.