CALIBRATION FIELDS and FOLLOWUP for SUPERNOVA COSMOLOGY PROJECT

  EARLY MAY 1997

---> All filters are Harris R and Harris I.  All Epochs are 2000.

This is a blanket list to cover both photometric calibration and followup.

This is the basic Plan.  You should probably speak with us once if anything
is unclear, and to check for any last minute updates to The Plan.

CALIBRATION PROCEDURE
---------------------
Intersperse Landolt fields with 5min (on 4m
telescope) or 30min (e.g. 2x15min) exposures of the target fields.  Get some
Landolt fields at airmasses ranging from 1-2.  Landolt calibration stars we
use are typically magnitude 12-16.  Do both R and I for all standard stars.
Target fields listed with filter "I, (R)" really require both, but if you
are severely strapped for time drop the R band exposure.

Calibration Priority is 2-4; higher priority means we want it more.
(I.e. do the 4's over the lower prority ones if you have to choose.)

For data tapes, DAT are preferred, but Exabyte are usable.  If we can ftp
the data from a site right after the observations, sned mail to
deepnews@lbl.gov with the information where we might find it.

"What To Do" Priority is as follows:
------------------------------------

(A) If this is the first photometric night of the run or telescope is 0.9m,
do as many target fields with the calibration procedure as possible.

(B) If a previous night was photometric, do the followup fields for which
your telescope is listed as the primary followup telescope.  If night is
photometric, please also get Landolt fields to be used to calibrate these
followup images, and any other calibration fields (using the calibration
procedure above) for which there is time.

(C) If night is not photometric, do followup fields, the ones assigned to
your telescope at higher priority than the ones assigned to other
telescopes.  Do the ones assigned to other telescopes as time permits.

Suggested Landolt fields (also use ones optimized for your observatory): 

Landolt Field           RA(2000)        Dec(2000)
-------------           --------        ---------
SA98_627                06:51:53        -00:22:03

RU149                   07:24:16        -00:31:30
RU152                   07:29:56        -02:05:30

SA100_269               08:53:19        -00:41:10

SA101_342               09:57:31        -00:21:49
SA101_262               09:56:08        -00:29:48

PG1047+003              10:50:08        -00:01:00

SA104_460               12:43:03        -00:28:21
SA104_239               12:42:23        -00:42:32   (is just north of 239)

SA107_602               15:39:19        -00:15:29

Internal use: criterea used for ranking the calibration fields we want:
-----------------------------------------------------------------------
4 = 96 field for which there is no photometric nights of calibration yet
      or 97 field with multiple high prio objects
3 = 97 high prio field or 96 field
2 = 97 medium prio field
1 = 97 low prio field
0 = 97 really low prio field
                                                                   Follow
                                                                   ExpTime
                                                                     |
                                                  Calib              |    Who
Candidate      RA(2000)      Dec(2000)        z   Prior      Filters |  Follows
----------------------------------------------------------------------------
976            08:21:57.11   +03:53:35.8     0.55    3          R,I
                                                   
9732           08:22:57.37   +03:52:25.7     0.43    3          R,I
                                                   
9710           08:23:50.01   +03:28:52.9     0.18    3          R,I
                                                   
9781+9765+9733 08:23:58.94   +04:09:28.0             4          R 3x1000   ESO
  9781           08:23:52.67   +04:08:44.1     0.58             I 3x1000
  9733           08:24:02.49   +04:07:33.2     0.37
  9765           08:24:05.21   +04:11:22.8     0.32
                                                   
963            08:24:13.32   +03:24:58.7     0.47    3          I, (R)
                                                   
9777           09:58:53.35   -00:20:28.8     0.59    3          R 3x800    WIYN
                                                                I 3x900
                                                   
9776           10:00:02.92   -00:23:30.5     0.73    3          R 3x1000   ESO
                                                                I 3x1000
                                                   
962            10:48:50.96   +00:03:30.6     0.57    3          I, (R)
                                                   
9779           10:48:57.61   +00:31:50.3     0.45    3          R 3x600    ESO
                                                                I
                                                   
9794+9738      10:55:54.45   -03:57:55.0             3          R 3x800    WIYN
  9794           10:55:52.98   -03:59:02.1     0.58             I 3x800
  9738           10:55:55.89   -03:56:48.0     0.47
                                                   
9742           10:56:51.44   -03:58:36.7     0.44    3          R,I
                                                   
9621           10:56:59.12   -03:37:36.2     0.83    3          I, (R)
                                                   
9793           10:56:53.15   -04:13:50.6     0.35    2          R 3x600    ESO
                                                                I 
                                                   
                                                   
(Note -- do 9760 separate from 9739+97126 if your FOV is <9')
                                                   
9760+126+39    10:57:35.38   -03:50:19.1             4          R 3x1000   ESO
97126+9739     10:57:47.77   -03:46:32.3             3          I 3x1000
  9760           10:57:19.20   -03:54:51.5     0.65
  97126          10:57:43.97   -03:47:17.9     0.49
  9739           10:57:51.57   -03:45:46.7     0.65
                                                   
97102+9785     10:57:30.92   -03:14:18.8             3          R 3x1000   ESO 
  97102          10:57:30.31   -03:14:49.5     0.62             I 3x1000
  9785           10:57:31.52   -03:13:48.1     0.42
                                                   
964            11:59:37.73   -09:54:34.0     0.57    4          I, (R)
                                                   
9617           12:48:35.18   -00:46:02.8     0.66    3          I, (R)
                                                   
969            13:45:56.16   +02:26:53.9     0.50    3          I, (R)
                                                   
                                                   
(Note -- if FOV>7', do 4SNe below,
 otherwise do 9784+97129 and 9782+9611 as two separate fields)
                                                   
4SNe           13:47:23.86   +02:25:47.6             4          R,I
9784+97129     13:47:09.90   +02:25:47.6
  9784           13:47:09.90   +02:23:57.7     0.83
  97129          13:47:09.90   +02:27:37.4     0.51
9782+9611      13:47:34.90   +02:26:15.6             3          R,I
  9782           13:47:31.98   +02:26:16.2     0.36
  9611           13:47:37.81   +02:26:15.1     0.19
                                                 
9626           13:48:27.22   +02:27:46.8     0.44    4          I, (R)
                                                   
9624           15:30:11.25   +05:55:27.2     0.45    4          I, (R)

**********************************************************************
For followup, WIYN should do this field (calibration, see 4SNe above)

Average coord:   13:44:48.54   +02:40:44                        R 3x1000  WIYN
97129          13:44:37.52   +02:42:34       0.51               I 3x1000
9784           13:44:37.49   +02:38:55       0.83    
9782           13:44:59.60   +02:41:12       0.36