Date: Mon, 14 Mar 2005 05:36:03 -0700 (MST)
From: John Barentine
Subject: 3.5m Night Log 20050313
                         Apache Point Observatory
                         3.5m Telescope Night Log
                          Sunday, March 13, 2005
                                                          ACTUAL
  ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 -------------------------------------------------------------------
  N.Silvestri     N.Silvestri            DIS            22:45  02:10
  INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS    DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D   B   USE   D    B
 ----------------------------------------------------------------------
 UW11/R      19:03  00:10  1.1  3.0   0    0   1.1  0    0    0    0
 UW09/R      00:10  05:21  3.2   0    0    0   2.0  0    0    0    0
   note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Barentine
 Clouds and an approaching storm front at sunset, with winds bumping up
near the closure limit.  I had the enclosure open to ventilate during
twilight but then closed at 18:35 as radar returns approached.  Opened
again around 22:30 as the sky cleared, but clouds were to the west.  We
had about an hour under light clouds but by 23:15 things were thickening.
Seeing no threats on radar, I decided to stay open and Nicole plugged away
at her object.  A little after 02:00, the clouds to our west on satellite
thickened considerably and I saw what looked like virga in the direction
of El Paso, so I closed.  The rest of second half was overcast.  Nicole
gave up at 05:00 and I put everything away for the night.
                       ------- FAILURE LOG -------
   PROG   INST    FAILURE MODE      TIME
       (SEGDFNVO)    TI/SHU     START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
              ---------------- FOCUS LOG ---------------
                                        Air/Truss    Wind
  Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
  ---------------------------------------------------------------------
  22:42 DISslit     -100(869)   229 81  4.2/4.7    275  19   -     1.02
  22:46 NA2gdr      -4378(26621)232 80  4.2/4.7    275  17   R     0.74
                 ------------- WEATHER LOG ----------------
                                    Wind                      Precip.or
      Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    46    20     18   252  (WSW)    586   PtlyCldy    none
     17:01    44    18     15   262  (W)      677   MstlyCldy   none
     18:01    44    21     31   263  (W)     1084   MstlyCldy   none
     19:01    42    20     24   260  (W)     1273   Overcast    none
     20:01    41    22     24   261  (W)      802   Overcast    none
     21:01    40    23     23   276  (W)      758   Overcast    none
     22:01    40    22     15   270  (W)     1371   MstlyCldy   none
     23:01    39    22     12   272  (W)     1396   PtlyCldy    none
     00:01    38    22     10   266  (W)      959   MstlyCldy   none
     01:01    38    22     10   257  (WSW)    980   Overcast    none
     02:01    38    22     13   222  (SW)     990   Overcast    none
     03:01    36    23     12   238  (WSW)   1024   Overcast    none
     04:01    35    24     17   233  (SW)     951   Overcast    none
     05:01    34    24     16   250  (WSW)    881   Overcast    none
      Note: the wind was coming from the azimuth listed.  The convention
      used is north=0 degrees, east=90 degrees.  The dust count is
      particles > 1u per 0.1 cubic feet.
                               TELESCOPE STATUS
       Telescope drives operational. Current Remark version: 2.85b
       Current TCC version: 2.7.2  Current TUI version: TUI 0.94b2