Date: Sun, 2 Nov 2003 06:20:11 -0700 (MST)
From: Jack Dembicky
Subject: 3.5m Night Log 20031101
                         Apache Point Observatory
                         3.5m Telescope Night Log
                        Saturday, November 1, 2003
                                                          ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 W.Zheng        W.Zheng,K.Chiu          DIS            18:00  20:40
                                                       23:35  05:30
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 JH02/R      18:07  05:27   0   3.0   0    0   5.2  3.2   0    0    0
 note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J.Barentine
 Opened at 17:45 to cool while the observers took biases.  Seeing was
around an arcsecond with clearing skies until around 20:30 when the
dewpoint depression reading from the weather station suddenly shot down
below 0 degrees C.  While the reading appeared faulty, clouds were rapidly
forming at the ridge and blowing over us, so I elected to close.  Railings
upstairs were slightly tacky to the touch when I went up to close.  The
dewpoint depression readings changed back to more reasonably values over
the next half hour, but the skies remained nearly overcast.
 The skies had sufficiently cleared near 23:30 (with no dewpoint
anomalies in the previous two hours) that I decided to open.  The
clouds returned quickly... then disappeared.  This cycle repeated as
clouds suddenly formed over us and then dissipated; I warned the observers
to keep a careful watch on the cloud camera images.
 2nd half Observing Specialist: J.Dembicky
Nice quiet 2nd half with no problems.
                     ------- FAILURE LOG -------
 PROG   INST   FAILURE MODE     TIME
      (SEGDFVO)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
                ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 17:58 dis-slit    250(1154)   185 80  11.4/12.9  177  15   -     1.0
 17:59 dis-slit    250(1154)   185 80  11.4/12.9  177  15   -     1.04
 18:02 NA2gdr      -1970(42030)190 80  11.4/12.8  191  15   R     0.96
 23:41 DISslit     175(968)    190 78  10.0/10.5  188  11   -     1.09
                 -------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    58    31     19   213  (SSW)    506  PtlyCldy     none
     17:01    54    31     15   208  (SSW)    553  PtlyCldy     none
     18:01    53    31      8   198  (SSW)    644  PtlyCldy     none
     19:01    52    31     14   184  (S)      644  PtlyCldy     none
     20:01    52    39     21   180  (S)      760  PtlyCldy     none
     21:01    51    43     18   165  (SSE)    806  MstlyCldy    none
     22:01    51    44     20   176  (S)      696  MstlyCldy    none
     23:01    50    42     21   206  (SSW)    787  MstlyCldy    none
     00:01    50    43     17   192  (SSW)    895  PtlyCldy     none
     01:01    50    37     18   209  (SSW)    834  PtlyCldy     none
     02:01    47    42     14   208  (SSW)    909  MstlyClr     none
     03:01    47    36     13   212  (SSW)   1050  MstlyClr     none
     04:01    45    30      8   204  (SSW)   1043  MstlyClr     none
     05:01    44    31      9   235  (SW)     743  MstlyClr     none
     06:01    44    31      9   265  (W)      758  MstlyClr     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 guide software version: guider v4.1b4
   Current TCC version: 2.7.1  Current TUI version: TUI-0.75