Instructions for epoch conversion
Updated 040813 / tho
Updated 20090408 / maturun
On apps2:
Open up a terminal of your choice and change current working path to "/home/kurpitsa/contobs/". Backup sources.list with "mv sources.list sources.list_YYYYMMDD" (where YYYYMMDD should of course reflect the current date) and run "./muunna". Follow "In vax"-instructions.
In vax:
Our "master source list" with the correct J2000 coordinates is
called gix_sources.list. The sources.list is converted from
this by typing:
The program asks for the initial epoch, which for this case
is J2000, ie. answer 2.
Then it asks for the final epoch, and if you make the conversion for
"your" week, it is a good idea to use a date from the middle of the
week. For example for week 28 it would be something like:
The final epoch:
Year (YYYY) :
2004
Month (mm) :
7
Day (DD.dd) :
8.5
Then give the file names:
Name of the source data file :
gix_sources.list
Name of the new data file :
sources.list
And that's it. CONTOBS will immediately start using the newest version
of the sources.list file.
Last modified: Wed Apr 8 14:50:53 EEST 2009