Date: Sat, 24 May 2008 11:45:23 -0000 (UTC)
Subject: 3.5m Night Log 20080523
From: "Gabrelle Saurage"
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Friday, May 23rd, 2008
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
-------------------------------------------------------------------
T.Harrison      T.Harrison              DIS           00:20  01:08
D.Hoffman       D.Hoffman               DIS           01:08  04:25
T.Murphy        R.McMillan              APOLLO        --:--  --:--
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
---------------------------------------------------------------------
 NM07/R     21:03  01:05   2.3  1.2   0    0    0   0.5   0    0    0
 NM03.O/O   01:05  04:27    0    0    0    0    0   3.4   0    0    0
 DD01/R     04:27  05:50    0   0.5   0    0    0    0    0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
Observing Specialists: G.Saurage
Az Velo Scales:
   At checkout 584.2, 582.4; 583.3 (no change)
High dust + humidity kept us closed until 00:20. We opened with dust over
the limit and humidity flirting with closing us down. Seeing was over 3"
most of the time, at best 2.3" or so.
We closed around 04:25 when humidity was >75% and dust >4700 cts.
Conditions remained erratic the rest of the night.
                       ------- 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
 -----------------------------------------------------------------
23:23 dis-slit     9(-91) 206  42   5.4  5.6  5.8  5.2  5.1      3.60
01:53 dis-slit   202(  9) 314  69   4.3  4.2  5.2  3.9  4.2      2.30
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    43    36     18   268    (W)   5050  ptly cldy   dust
     17:00    45    35     20   241  (WSW)   3856  ptly cldy   dust
     18:00    48    35     18   231   (SW)   4672  ptly cldy   dust
     19:00    47    33      9   263    (W)   5377 mstly clr    dust
     20:00    42    34      3   276    (W)   5196 mstly clr    dust
     21:00    41    32      5   273    (W)   5384    clear     dust
     22:00    43    30      8   273    (W)   5775    clear     dust
     23:00    43    29     11   277    (W)   4966    clear     dust
     00:00    42    29     17   235   (SW)   4599    clear     dust
     01:00    40    30     11   279    (W)   4571    clear     dust
     02:00    40    29     13   274    (W)   4509    clear     dust
     03:00    40    30      3   285  (WNW)   4704    clear     dust
     04:00    38    31     12   266    (W)   4596    clear     dust
     05:00    39    31     16   272    (W)   4835    clear     dust
     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