|
This light curve is the ``fixed'' version of an-0069, the
first run of XCov16, taken by Atsuko Nitta at CTIO. Near the
end of the night,
and while still taking data, she noticed her quilt9 clock
was 39 minutes slow compared to her GPS clock;
the seconds were exactly syncronized between quilt9 and GPS, however.
Our current assumption at HQ (arrived at in consultation with Atsuko)
is that the q9 clock was somehow changed
prior to run start by this exact amount. We have therefore
added 39 minutes to the run start time to produce the file
an69fix, which in reduced form is shown here. Combining this
run with the second night (an-0070) does not seem to lead to any
irregularities in the Fourier transform (but we wait for more
data to perform more sensitive tests of our assumption), but until
we have an ephemeris from bulk of the campaign with which to
compare the timing on this run, we will not include it in the
grand FT.
|
|
an69fix:
VIEW larger image
(3 kb GIF)
DOWNLOAD PostScript file
(gzipped, 9 kb)
|