Date: Wed, 1 Jun 2011 12:11:58 -0000 (UTC)
Subject: 3.5m Night Log 20110531
From: "Gabrelle Saurage"
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, May 31, 2011
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
 X.Liu           X.Liu                  DIS            20:15  00:50
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
 PU08/R     20:15  05:47   4.5   0    0    0   4.9   0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: G.Saurage
Clouds and dust increased over first half and then humidity rose around midnight.
Closed all second half.
                    ------- 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
 --------------------------------------------------------------------------
 20:32 dis-slit   267(  511) -161  73  16.1 18.6 17.2 17.4 17.1     1.51
 21:25 dis-slit    45(  214)  -67  59  15.5 16.9 16.2 15.8 15.7     1.63
 22:20 dis-slit    13(  130) -123  48  14.6 15.6 15.3 14.6 14.8     1.73
              ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    68    17      8   160  (SSE)   2079  ptly cldy   none
     17:00    69    22     10   209  (SSW)   2360  ptly cldy   none
     18:00    70    21     10   196  (SSW)   2481  ptly cldy   none
     19:00    66    24      7   161  (SSE)   2500  ptly cldy   none
     20:00    62    25     13   112  (ESE)   3357  ptly cldy   none
     21:00    61    30     12    99    (E)   3741  ptly cldy   none
     22:00    59    33      7    94    (E)   4154  ptly cldy   none
     23:00    58    34      8    93    (E)   4409 mstly cldy   none
     00:00    57    37     17    85    (E)   4837 mstly cldy   none
     01:00    57    49     17   112  (ESE)   6143 mstly cldy   dust
     02:00    58    47     20   146   (SE)   5276 mstly clr    none
     03:00    55    51     24   139   (SE)   6340 mstly clr    none
     04:00    54    52     28   141   (SE)   8370 mstly clr    none
     05:00    56    44     22   156  (SSE)   5143 mstly clr    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: 2.14.0
    Current TUI version: 1.8.7