From: "Pete Newman"
Subject: Correcting an exposure time [was RE: 2.5m obslog 20011123 (MJD 52238)]
Date: Sun, 25 Nov 2001 07:03:58 -0700
Observers wrote:
> We therefore tried to "trick" SoS by editing the header of the data file
> copied to sos.apo.nmsu.edu (hence NOT touching the original data on HOST)
> and told SoS to re-reduce the data using the "sos_redo" command.
> This did not work.
Good try, but this will not work for two reasons.  First, if you change the
file on sos.apo.nmsu.edu so it is different to that on sdsshost, then SoS will
see the difference and copy the file over again, because SoS first works to
keep the files on sos.apo the same as those on sdsshost.  Second, sos_redo
works by _deleting_ the file on sos.apo.nmsu.edu to force a re-copy and
re-reduction.  So in both cases, your change gets overwritten.
If you make the change on sdsshost (keeping an original copy of the file),
then sos_redo should work.
How did you edit the FITS file?  With vi?
--Pete