From: clidman@eso.org
Date: Thu Aug 15 2002 - 02:38:34 PDT
Hi Greg,
SN2001gw has already been observed with FORS1 in I and R as part of program
169.A-0382(G). The image quality was around 0.55. I have the raw data, but I do not
have any calibrations. I am waiting for ESO to send me the complete data set, which
should be at the end of September.
In regards to 1994, I'll wait for your confirmation before asking Paranal to observe it.
Cheers, Chris.
Greg Aldering wrote:
> > We have about 3 hours left in program 169.A-0382(F) - FORS2 imaging
> > - and 2.6 hours left in program 169.A-0382(B) - FORS2 spectroscopy.
> > The next service period starts on September 9th and lasts 6 nights.
> > I intend to get a spectrum of the host of Ravel with part of the
> > time that is available in 169.A-0382(B). Are there any other
> > suggestions?
>
> Hi Chris,
>
> I'm looking forward to examining the 9784 host images!
>
> I have several other hosts which need images. Generally they are
> either very faint or ones for which the SN lightcurve was poor. But
> they are still important for the hosts study because with them I will
> have a well-defined complete subsample of hosts.
>
> Here I list the relative priority for getting photometry in R or I
> (10 is highest priority).
>
> SCP IAU RA (2000) Dec #Refs | Priority | Mhost Host
> I | R I | I
> -----------------------------------------------------------------------------
> S01-033 2001gw 15:43:45 +07:57:50 0 | 0 10 | 20 big (3")
> 94264 1994an 22:44:18 +00:06:48 1 | 0 8 | 20.7
> 9624 1996cm 15:30:11.3 +05:55:27 16 | 3 6 | 26.0 compact
>
> I am aiming for S/N > 25 in I-band for the bright hosts (S01-033 and
> 94264), which should take less than 10 minutes each. Currently the
> very faint host 9624 has S/N ~ 2 in 2.5 hrs in I-band with 1.2"
> seeing on 4-m class telescopes, whereas I'd like to have S/N > 5 on
> it if possible. Because 9624's host is unresolved (at 1.2"), good
> seeing will help a lot. For 0.8" seeing at VLT I estimate that 1.7
> hrs in I and 0.9 hrs in R would do the trick. Together, these three
> hosts will use all the remaining FORS2 imaging time.
>
> Note that it is possible that Mark Sullivan obtained images for the two
> brighter hosts at the AAT a few nights ago. I'm awaiting confirmation on
> that.
>
> - Greg
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