From: Russet McMillan
Subject: 3.5m Night Log 20040501
Date: Sun,  2 May 2004 06:23:32 -0600 (MDT)
                         Apache Point Observatory
                         3.5m Telescope Night Log
                          Saturday, May 1, 2004
                                                          ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 M.Strauss       J.Hennawi              SPIcam,GRIM    20:00  05:47
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 PU04/R      20:43  05:17   0    0    0    0   0.3  8.2   0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 Some small puffy orographic clouds dissipated at sunset, but an east
 wind made humidity rise sharply for the first few hours of the
 night.  Then the wind shifted north, the air warmed, and the
 humidity dropped.  For the remainder of the night, we had
 photometric weather with moderate seeing, but large temperature
 swings made it difficult to track focus.
 During checkout GRIM had two bad quadrants.  After a power cycle it
 had three good and one not-quite-there quadrant.  Once we got going
 on the sky, all four quadrants started working and seemed pretty
 stable throughout the remainder of the night.  We also found a new
 and rather obscure bug in the spicam code.
                          ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEGDFVO)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
                 ---------------- FOCUS LOG ---------------
                                         Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 21:00 SPIcam      50(1095)    81  68  0.7/2.6    62   16   z     2.1
 00:17 GrIm2(f/10) 275(1093)   -75 69  3.4/1.0    359  2    J     0.96
 01:53 GrIm2(f/10) 125(1030)   288 49  2.8/1.7    355  6    J     1.25
                ------------- WEATHER LOG ----------------
                                  Wind                       Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    51    25      9   228  (SW)     570  ptly cldy   none
     17:01    47    22     11   263  (W)      520  ptly cldy   none
     18:01    50    22     11   243  (WSW)    580  ptly cldy   none
     19:01    45    21      7   213  (SSW)    494  mstly clr   none
     20:01    37    23      6    80  (E)      350   clear      none
     21:01    33    22     13    62  (ENE)    357   clear      none
     22:01    31    22     15    76  (ENE)    467   clear      none
     23:01    37    19      2    20  (NNE)    869   clear      none
     00:01    39    20      9    18  (NNE)   1142   clear      none
     01:01    38    16      2     8  (N)      538   clear      none
     02:01    36    20      7    27  (NNE)    449   clear      none
     03:01    36    19      1     0  (N)      393   clear      none
     04:01    36    17      7   357  (N)      351   clear      none
     05:01    37    19      6   352  (N)      409   clear      none
     06:01    37    19      7    10  (N)      583   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 Remark version: 2.85b
     Current guide software version: guider v4.1b4
     Current TCC version: 2.7.2  Current TUI version: TUI-0.843