Date: Tue, 24 Apr 2007 12:07:35 -0000 (UTC)
Subject: 3.5m Night Log 20070423
From: "Gabrelle Saurage"
                         Apache Point Observatory
                         3.5m Telescope Night Log
                         Monday, April 23, 2007
                                                           ACTUAL
  ASTRONOMER     OBSERVER(S)             INSTRUMENT      START  FINISH
  -------------------------------------------------------------------
  T.Murphy       R.McMillan              Apollo          20:20  20:50
  J.Frieman      H.Lin,D.Finley,D.Kubik, DIS             20:53  06:00
                 D.Tucker,S.Allam
   INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
  I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
  DD01/O     20:36  20:51    0    0    0    0    0   0.4  0.2   0    0
  UC02/R     20:51  05:27   1.8  4.5   0    0   1.2  1.0   0    0    0
   note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
Observing Specialist: G.Saurage
High winds delayed opening. Closed at 22:05 due to clouds and radar
returns. The system passed over us raising the humidity for a bit and then
the winds returned. Very unstable conditions continued. Opened again at
4:15am, when things seemed to settle down, but as expected after all that
weather, seeing was very poor.
                       ------- 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
 -----------------------------------------------------------------
21:45 DISslit    -23(127)  96  53  8.4  8.9  8.5   8.9  8.3   --   1.7
04:25 DISslit  -398(-553) 250  66 -0.8  1.5  1.3   1.2 -0.4   --   2.3
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    57    16     43   218   (SW)   1469  ptly cldy   none
     17:00    57    15     23   218   (SW)   1337  ptly cldy   none
     18:00    57    13     27   224   (SW)   1765  ptly cldy   none
     19:00    53    11     40   232   (SW)   2844  ptly cldy   none
     20:00    49    10     26   227   (SW)   1382  ptly cldy   none
     21:00    47    12     23   213  (SSW)   1394   cloudy     none
     22:00    47    14     21   236   (SW)   1334   cloudy     none
     23:00    42    21     20   269    (W)   1769   cloudy     none
     00:00    39    22     26   272    (W)   1374 mstly cldy   none
     01:00    34    28     17   331  (NNW)   1011 mstly cldy   none
     02:00    34    24     30   272    (W)    851  ptly cldy   none
     03:00    33    23     24   279    (W)    586  ptly cldy   none
     04:00    32    19     21   276    (W)    539 mstly clr    none
     05:00    30    20     10   296  (WNW)    511    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: 2.9.0
      Current TUI version: TUI 1.3