Alan Whiting & students (CTIO, Chile):
For both telescopes, the important limit is low altitude.
Airmass 3 (or twenty degrees altitude) is as far as we really should go.
That brings us to about 4h30m UT. That's well short of your 8h12m end
time for XMM; but until someone positions an observatory on, say, Easter
Island there's not much help for it.
Federico Gonzalez (CASLEO):
The night of the 9th is the first one of an engineering run
during which is planned some work on the 2.15 telescope.
If this work can be completed successfully in a few hours
(which is rather unlikely),
we would observe your stars in the U filter.
