Date: Sat, 15 Nov 2008 05:35:34 -0700
From: "Jeff Coughlin"
Subject: 3.5m Night Log 20081114
                     Apache Point Observatory
                     3.5m Telescope Night Log
                     Friday, November 14, 2008
                                                        ACTUAL
 ASTRONOMER     OBSERVER(S)              INSTRUMENT  START  FINISH
 --------------------------------------------------------------------
 J.Stocke       J.Stocke, T.Yan, M.Moe   TSPEC       17:11  00:26
 G.Stringfellow G.Stringfellow           TSPEC       00:26  05:45
  INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 CU04/R     17:58  23:57    0    0    0    0   0.2  5.8   0    0    0
 DD05/R     23:57  05:38    0    0    0    0    0   5.6   0    0    0
 note: scheduled times listed include instrument change time
               ------------- ACTIVITY LOG --------------
 Observing Specialist: J. Coughlin
 Az Velocity Scale was 580.0, measured 580.0, 578.7; 579.4. Kept at
 580.0.
 Top and Middle left louvers had to be opened from the observing level
 as per PR 902. Seeing was very poor (~3") at opening and stayed that
 way until around 20:15. Initial focus run was difficult, but I managed
 to get good focus from looking at the astigmatism. Humidity skirted
 closure limits for a few hours after opening, but it managed not to
 linger above it, so we stayed open; humidity dropped back down at
 20:14. At 19:02 program CU04 was unable to find their faint targets due
 to the bright infrared sky from poor conditions, and turned over
 control to second half program DD05 (another CU user) to attempt some
 brighter targets, which were successful. Control was handed back to
 CU04 at 20:45 when conditions improved significantly. CU04 continued
 until 00:26 with the approval of DD05, who then took back over for the
 remainder of the night.
 TSpec and the rotator behaved well tonight, and pointing appeared to be
 excellent.
                      ------- 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
 -----------------------------------------------------------------
 19:12 TSPEC   -75(   91)   8  57   0.6  5.3  3.4  2.1  3.0     3.00
 21:49 TSPEC   -45( -125) 349  79   0.0  0.4  0.7 -0.2  0.4     3.10
 23:48 TSPEC    82(   44) -74  66   2.2  1.2  1.9  0.9  1.8     1.00
 03:33 TSPEC   -50( -165) -78  68  -0.9 -0.3 -0.2 -1.0 -0.9     1.10
 05:04 TSPEC    75(  -89) -123  54  -1.7 -1.5 -1.3 -2.0 -1.7     0.85
               ------------- WEATHER LOG ----------------
                                  Wind                      Precip.or
    Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
   -------------------------------------------------------------------
     16:00    47    24     10   276    (W)    749    clear     none
     17:00    43    28      5   334  (NNW)    738    clear     none
     18:00    33    29     15    73  (ENE)    618    clear    humid
     19:00    33    28     11    62  (ENE)    617    clear    humid
     20:00    31    27     14    76  (ENE)    809    clear    humid
     21:00    35    27      5    15  (NNE)    973    clear     none
     22:00    35    26      5     7    (N)    818    clear     none
     23:00    36    26     10   357    (N)    862    clear     none
     00:00    36    27      9   311   (NW)    717    clear     none
     01:00    33    25      9   349    (N)    737    clear     none
     02:00    31    25      7   355    (N)    899    clear     none
     03:00    30    25      6   357    (N)   1086    clear     none
     04:00    29    24     15   332  (NNW)   1157    clear     none
     05:00    28    22     13   330  (NNW)   1292    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 1.5.1