Date: Wed, 26 Mar 2008 05:18:46 -0700 (MST)
From: Jack Dembicky
Subject: 3.5m Night Log 20080325
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Tuesday, March 25, 2008
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)             INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 J.Coughin       J.Coughlin              DIS           18:38  06:45
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 NM04/R     20:12  06:05    0    0    0    0   3.1  6.8   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialists: J. Dembicky
03:23 DIS slitview camera started giving strange images (half missing,
inverted)  See image 1314.  Restarting dcamera and dcam fixed the problem.
Elevated dust levels after about 2:30.  I turned the press fans on and
closed the lovers.  Humidity was low and dust wasn't spiking.  Dust cts
maxed out around 3500cts outside, inside much lower.
04:44 DISslit camera failed again.  see image 1809.  same fix as above.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
      (SAEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
 -----------------------------------------------------------------------
 19:56 DISslit   263(403)  120  48   9.6 10.9 10.2  9.8  9.5   --   1.17
 00:04 DISslit     20(33)  220  56   8.8  8.2  8.7  7.5  8.3   --   1.07
 03:06 DISslit     49(46)  186  36   7.3  7.3  7.8  6.9  7.2   --   1.34
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    54    17     20   230   (SW)   2136    clear     none
     17:00    54    11     18   271    (W)   2224    clear     none
     18:00    55    10     24   262    (W)   2824  lt. cirrus  none
     19:00    51     5     16   261    (W)   2565  lt. cirrus  none
     20:00    49     0     22   258  (WSW)   1900  lt. cirrus  none
     21:00    48     1     16   267    (W)   2033  lt. cirrus  none
     22:00    49     0     17   251  (WSW)   2180  lt. cirrus  none
     23:00    48     0     16   265    (W)   2395    clear     none
     00:00    48     1     13   269    (W)   2618    clear     none
     01:00    47     1     15   268    (W)   2631    clear     none
     02:00    47     2     13   266    (W)   2700    clear     none
     03:00    45     2     17   271    (W)   2870  lt. cirrus  none
     04:00    44     2     18   280    (W)   3036    clear     none
     05:00    44     2     20   280    (W)   3258    clear     none
     06:00    43     3     19   270    (W)   3340    clear     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 1.4.5