From: Saul Perlmutter (saul@lbl.gov)
Date: Tue Apr 16 2002 - 08:37:44 PDT
Note from Underclouds
Almost the entire night was spent with the dome closed waiting for the
clouds to clear. We had a little bit of excitement just about 25
minutes before our target fields set, when the clouds cleared just
enough to try to go for a target (though presumably still through lots
of extinction). We decided to try out one of the prime CFHT targets,
C02-008/"Abrararcourcix", on the off chance that some light would
trickle through (and to practice our setup routines). Surprisingly, we
got a trace on the 15 minute spectrum. Isobel's reduction looks
reasonably likely to be a z =0.28 SN I. ...Which I guess would explain
how we managed to get an apparently I=23.7 candidate in only 15 minutes
of exposure through cirrus.
On the bright side, being optimistic, I guess this will save us spending
an hour or more tomorrow night at the Subaru or Gemini telescopes.
This C02-008 was on our prime candidate list, and tomorrow night we'll
probably be spending at least an hour on each target at each telescope.
Ok, now we have less about 24 hours left in which to get all the rest of
the spectra at Subaru and Gemini, and reduce them, and choose the ones
to go to HST. ...No problem, of course, if the weather cooperates.
As a reminder, we do have one likely z ~ 1.06 redshift SN from VLT, and
one likely z ~ 0.56 SN in hand, so the most important remaining HST
goal will be trying for two relatively modest z ~ 0.85 SNe. I'll send
the proposed list of candidates in the following message.
Goodnight/goodmorning -- with wishes for better weather all around,
north and south.
This archive was generated by hypermail 2.1.4 : Tue Apr 16 2002 - 08:41:00 PDT