Date: Thu, 8 Sep 2005 06:24:15 -0600 (MDT)
From: Jack Dembicky
Subject: 3.5m Night Log 20050907
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Wednesday, Sept 7, 2005
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 J.Frieman       J.Dembicky, J.Marriner DIS            20:14  22:40
 S.Anderson      S.Anderson, A.Becker   DIS            02:00  06:21
  INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
 I/ROW/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 ----------------------------------------------------------------------
 UC01/W      20:14  01:00  2.3   0    0    0   1.4  1.1   0    0    0
 UW04/R      01:00  05:48  1.0   0    0    0   3.8   0    0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Dembicky
 Humidity kept us closed until the end of twilight.  The humidity looked
 as if it was staying just below closure limits so I decided to open at
 the end of twilight.  Pointing was a bit off so I fixed that.  I then got
 about 2.5 hrs of science before the humidity finally did shoot over the
 closure limits.
 Conditions stayed this way until 2AM when the humidity finally dropped
 below closure limits and I was once again able to open.
 We had some pesky cirrus for the last part of the 2nd half.
                      ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVOG)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
                ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 20:20  DISslit     125(971)   64  66   10.8/14.5   85  13  none  2.8
 22:15  DISslit     100(913)   40  50   10.2/11.1  102  17  none  1.8
 02:11  SPIcam      75(1160)   68  64    9.6/10.4  115   7   g'   1.0
 02:24  NA2gdr   -143(28858)   63  66   10.1/10.4  102   5   R    0.86
             ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     17:01    59    45      8   101  (E)      --    Pt. Cldy    none
     18:01    57    45      8    96  (E)      --    Pt. Cldy    none
     19:01    54    47     13    81  (E)      --    Pt. Cldy    humid
     20:01    52    46     13    79  (ENE)    --    Mst. Clr    none
     21:01    52    43     17    82  (E)      --    Mst. Clr    none
     22:01    50    45     14    84  (E)      --      Clear     none
     23:01    50    46     16   113  (ESE)    --      Clear     humid
     00:01    49    46     18   111  (ESE)    --      Clear     humid
     01:01    49    46     10   108  (ESE)    --      Clear     humid
     02:01    50    44      9   108  (ESE)    --     Mst. Clr   none
     03:01    51    42      0   161  (SSE)    --     Cirrus     none
     04:01    53    43      3   201  (SSW)    --     Cirrus     none
     05:01    53    44      0   258  (WSW)    --     Cirrus     none
     06:01    51    44      0   248  (WSW)    --     Cirrus     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 1.0.1