Date: Mon, 25 Feb 2002 06:03:12 -0700 (MST)
From: Jack Dembicky
Subject: 3.5m Night Log 20020224
                         APACHE POINT OBSERVATORY
                         3.5m Telescope Night Log
                       Sunday, February 24th, 2002
                                                           ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 -------------------------------------------------------------------
 G.Mallen-Ornelas M.Gladders           DIS-high        18:45   00:10
 M.Strauss     X.Fan                   GRIM            00:10   06:00
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 PU02/O      18:50  00:10   0    0    0    0    0   5.3   0    0    0
 PU04/R      00:10  05:42   0    0    0    0   0.1  5.4   0    0    0
 note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J.Barentine
 High winds around sunset prevented opening early for cooling.  Finally
opened at 18:40 after the winds died down a bit and Mike took some mirror
cover flats.  Conditions were passable; skies were clear but the seeing
stayed up around 1.5-2.0 arcseconds.
 Despite autoguiding, there is evidence of drift in some of the images.
Mike points out one example where the slit drifted with respect to the
background (i.e., perpendicular to the slit) by 1.4 arcsec --
approximately equal to the nominal width of the slit -- in about one hour.
The autoguider was evidently functioning "normally" during this period;
there was no sudden jump to another guide star or anything like that, and
the guide star was well away from the position of the slit.
 2nd Half Observing Specialist: J.Dembicky
 Everything ran smoothly with excellent sub arc second seeing in J.
                   ------- FAILURE LOG -------
 PROG/INST  FAILURE MODE     TIME
 S/E/G/D/O     TI/SHU    START  FINISH    DESCRIPTION
 -----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 18:57 DISslit        -10(515) 297 76    5.2/6.7   268  19   -    1.82
 19:56 NA2gdr     -1951(55048) 165 66    4.7/5.3   280  18   R    1.27
 00:28 GrIm-f/10      140(538) 343 62    3.3/3.2   327  15   J    0.66
 03:44 GrIm-f/10      160(616) 322 41    3.2/2.5   280  10   J    0.71
              --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    47     2     22   246  (WSW)    445  PtlyCldy    none
     17:01    44     0     19   263  (W)     1144  PtlyCldy    none
     18:01    41    -1     26   257  (WSW)   1321  PtlyCldy    none
     19:01    41    -5     17   277  (W)     2424  PtlyCldy    none
     20:01    40    -4     22   269  (W)      691  MstlyClr    none
     21:01    40    -3     10   284  (WNW)   1308   Clear      none
     22:01    39    -1     13   296  (WNW)    777   Clear      none
     23:01    38    -1     13   306  (NW)     848   Clear      none
     00:01    39     0      7   325  (NW)     749   Clear      none
     01:01    38     0     14   307  (NW)     862   Clear      none
     02:01    37     2      8   326  (NW)     513   Clear      none
     03:01    37     3     14   281  (W)      461   Clear      none
     04:01    37     0     11   295  (WNW)    420   Clear      none
     05:01    37    -1     13   311  (NW)     379   Clear      none
     06:01    38    -3     15   274  (W)      345   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
   Primary, secondary, and tertiary mirrors in place and collimated.
   Primary support system operational. Mirror ventilation system in
   place.
   Telescope drives operational. Current Remark version: 2.80b
   Current guide software version: GIm Ctrlv4.1b2
   Current TCC version: 2.6.1   Current MC version: v1_7_3