Date: Thu, 20 Apr 2006 06:19:57 -0600 (MDT)
From: Jack Dembicky
Subject: 3.5m Night Log 20060419
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Wednesday, April 19, 2006
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 Q.Hart      Q.Hart, B.Keeney           SPIcam         19:40   00:55
 C.Laws      C.Laws, M.Schmieding       Echelle        00:55   06:10
             C.Mattheisen, A.Kobelski
  INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
 I/ROW/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 ----------------------------------------------------------------------
 CU03/R      20:32  01:00   0    0    0    0   4.5   0    0    0    0
 UW09/R      01:00  05:32   0    0    0    0   0.8  3.7   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Dembicky
 Elevated dust levels (CO2 cleaning requested) but with the discussions
 today amoungst the staff,  I opted to  opened even under marginal
 conditions.  Very fine yellow-brownish dust grains were observed to
 accumulate on my (cleaned) car windshield overnight.
 Dust counts were 3000-4500 all night, no spikes.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVOG)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
                ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 20:28  SPIcam      75(1186)   41  74  10.2/11.5   196   5   r'   0.91
 20:37  NA2gdr  -2295(30704)   35  75  10.2/11.4   205  12   R    0.79
 00:58  Echelle     -82(-12)   72  55   9.4/8.5    180  10  ND2   1.5
 04:25  Echelle      122(90)  100  63   6.3/6.5    163   2  ND1   2.75
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    54    11     13   278  (W)     2965   Clear      none
     17:01    61    17     15   206  (SSW)   3335   Clear      Dust
     18:01    60    16     13   216  (SW)    3196   Clear      Dust
     19:01    54    11     20   226  (SW)    3173   Clear      Dust
     20:01    50     8     18   222  (SW)    3429   Clear      Dust
     21:01    50     7     11   217  (SW)    3606   Clear      Dust
     22:01    50     8     10   231  (SW)    3510   Clear      Dust
     23:01    50     8      5   179  (S)     3404   Clear      Dust
     00:01    48     8      7   192  (SSW)   3464   Clear      Dust
     01:01    46     9     10   185  (S)     3492   Clear      Dust
     02:01    47    11     13   175  (S)     3874   Clear      Dust
     03:01    46    15     22   171  (S)     4081   Clear      Dust
     04:01    43    17     10   162  (SSE)   3836   Clear      Dust
     05:01    42    16     12   216  (SW)    3778   Clear      Dust
     06:01    46     7      8   225  (SW)    4120  Mst. Cle    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: 2.8
      Current TUI version: TUI 1.2a5