From: Alex Conley (aconley@panisse.lbl.gov)
Date: Sat May 11 2002 - 18:03:32 PDT
The following finding charts are ready for use from the berkeley finding
chart page
http://panisse.lbl.gov/followup/charts/spring_2002
The Subaru finding charts are explained in a little more detail below.
Subaru:
S02-057, S02-08, S02-060, S02-061, S02-063, S02-064, S02-066
CTIO:
T02-015, T02-028, T02-028, T02-029, T02-037
CFHT/CTIO:
C02-026, C02-027, C02-031
There is one warning that comes with these finding charts: For everything
I just listed except C02-026, there is a small error in where the
crosshair appears on the zoom postscript. This only affects where the
crosshair was drawn. It does not change any of the offsets, angles, or
the RA and DECs. Future finding charts will not have this problem, but
the old ones will not be changed because this is only a cosmetic flaw (and
would require many hours of work).
If you have been using the fits zoom images also provided on the finding
chart page, this does make for a one pixel change in the CANDY field in
the header of the fits header. Since only the Keck people are using these
fits files (as far as I know), and I've talked to them seperately,
this shouldn't concern anyone else.
For the Subaru finding charts, note that all of the magnitudes are in
i'(AB). This means that the stars are actually a little brighter in
I than listed (~0.5 mags is the working offset).
Also note that there is more than one finding chart available for the
Subaru images. Only the shallow one is of any real use unless you
can offset from 20.5 mag stars. I only included the deeper ones because
there is no way you can see anything at the candidate position in the
shallow (7-10 sec) exposures, and I thought it might make everybody
happier if they could see something in some image at the position we
claim the SN is (but don't forget about the crosshair error!).
Alex
This archive was generated by hypermail 2.1.4 : Sat May 11 2002 - 18:03:44 PDT