Date: Wed, 26 Sep 2007 05:18:55 -0600 (MDT)
From: Jack Dembicky
Subject: 3.5m Night Log 20070925
                         Apache Point Observatory
                         3.5m Telescope Night Log
                         Tuesday, September 25, 2007
                                                           ACTUAL
  ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
 --------------------------------------------------------------------
 G.Stringfellow   G.Stringfellow         Echelle        18:15  19:45
 D.York           J.Barentine            DIS            --:--  --:--
 J.Carlin         J.Carlin               DIS            --:--  --:--
   INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
  I/ROW/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 CU05/R     19:49   20:15    0   0.4   0    0    0    0    0    0    0
 UC03/R     20:15   01:05    0   4.8   0    0    0    0    0    0    0
 UV01/R     01:05   06:01    0   4.9   0    0    0    0    0    0    0
   note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Dembicky
 AZ Vel Scale was 580.0  Changed to 570.0 (measured 569.2)
 A rather frustrating night due to weather conditions.  We did open in
 twilight but closed just before the first program actually started
 (although Guy did get a couple echelle exposures of his nova).  Then the
 waiting game started. I tried to open around 22:45 only to close just
 after we got DIS focused, due to clouds.  Humidity and forming clouds
 kept us closed until 03:45, when I again attempted to open and get some
 sky time.   Clouds were forming still around us and it was a bit
 frustrating, as clouds again appeared overhead as my observer was trying
 to get some standards.  Humidity was borderline closure as well, but
 stable.
 We threw in the towel at 05:00 since it didn't look like the clouds were
 now here to stay.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt FWHM
 ----------------------------------------------------------------------
 19:16 Echelle    293(-46)  -6  38  12.8 16.2 14.7  14.6 13.8  ND2  1.1
 22:52 DISSlit     28(355) 116  35  10.7 12.8 14.2  11.3 11.0   --  1.7
 03:49 DISSlit     26(264) 279  76  10.8 11.0 13.4  10.3 10.5   --  1.2
                 ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
 ---------------------------------------------------------------------
     16:00    62    39     12   268    (W)    683    cirrus    none
     17:00    62    39      2   267    (W)    760    cirrus    none
     18:00    57    40      6   253  (WSW)    863    cirrus    none
     19:00    54    38      3   243  (WSW)    888    cirrus    none
     20:00    56    38      5   269    (W)    922    cldy      none
     21:00    51    40      9   103  (ESE)    972    cldy      none
     22:00    50    41     10   108  (ESE)   1146    cldy      none
     23:00    51    44     18   126   (SE)   1127    cldy      none
     00:00    52    45     15   132   (SE)    945    cldy      none
     01:00    52    45     12   143   (SE)    847    cldy      none
     02:00    50    45     11   135   (SE)    864    cldy      none
     03:00    50    45     12   160  (SSE)    955    cldy      none
     04:00    52    46      9   190    (S)    837    cldy      none
     05:00    52    47     10   207  (SSW)    727    cldy      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 TCC version: 2.9.1
      Current TUI version: TUI 1.4