Date: Wed, 3 Jun 2009 04:09:55 -0600
Subject: 3.5m Night Log 20090602
From: Jeff Coughlin
                     Apache Point Observatory
                     3.5m Telescope Night Log
                     Tuesday, June 2, 2009
                                                        ACTUAL
 ASTRONOMER     OBSERVER(S)              INSTRUMENT  START  FINISH
 --------------------------------------------------------------------
 J.Darling      J.Darling                NICFPS      20:16  00:30
 P.Kundurthy    P.Kundurthy              AGILE       02:42  03:25
  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     21:10  01:05    0   1.4   0    0    0   2.5   0    0    0
 UW01/R     01:05  04:53   1.2  1.6   0    0   0.7  0.3   0    0    0
 note: scheduled times listed include instrument change time
               ------------- ACTIVITY LOG --------------
 Observing Specialist: J. Coughlin
 First half started off with great weather and excellent seeing, (0.6").
 A sudden spike in wind at 23:00 drove the seeing to around 2-3".
 Humidity rose to 80% right thereafter and put us close to closure
 limits. At 23:40 the observer reported his data was not usable with the
 extreme seeing, and I decided to close with winds gusting to 38 mph.
 Conditions continued to worsen thereafter with winds going past 40 mph
 and humidity steadily rising up to 95% around 02:00.
 Wind backed off and humidity had dropped around 02:40 so I re-opened.
 The observer had missed most of his transit event, and took images for
 about 40 minutes, but determined we had missed the transit. He had no
 backup targets and thus gave up and we closed for the night at 03:25.
 I turned off Agile power for move to TR2.
                      ------- 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
 -----------------------------------------------------------------
 20:25 NICFPS  -133(  922) -14  70  14.7 17.5 16.1 16.0 15.3   Ks  0.70
               ------------- WEATHER LOG ----------------
                                  Wind                      Precip.or
    Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
   -------------------------------------------------------------------
     16:00    67    22     17   275    (W)   1228    clear     none
     17:00    65    24      6   282  (WNW)   1317    clear     none
     18:00    64    22     18   280    (W)   1512    clear     none
     19:00    62    20      7   274    (W)   1460    clear     none
     20:00    59    20      1   282  (WNW)   1462    clear     none
     21:00    59    19      2   284  (WNW)   1434    clear     none
     22:00    60    17      1   206  (SSW)   1346 mstly clr    none
     23:00    50    35     26    80    (E)   3264 mstly clr    none
     00:00    47    42     28    70  (ENE)   2059 mstly clr   humid
     01:00    45    41     27    76  (ENE)   1068 mstly clr   humid
     02:00    44    42     34    70  (ENE)   1181 mstly clr   humid
     03:00    44    41     24    70  (ENE)   1909 mstly clr   humid
     04:00    44    41     20    73  (ENE)   1747 mstly clr   humid
    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: 2.10.0
     Current TUI version: TUI 1.5.1