From: "Noel Camron Hastings"
Subject: 3.5-m Night Log 2000.04.22
Date: Sun, 23 Apr 2000 05:42:39 -0700
                        Saturday, April 22, 2000
                        APACHE POINT OBSERVATORY
                              Observing Log
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)   INSTRUMENT       DATE    START  FINISH
--------------------------------------------------------------------
P.Szkody        P.Szkody      DIS-L, 1.5"     4/22-23  00:10   01:00
S.Anderson      S.Anderson    DIS-L, 1.5"     4/23     01:00   06:05
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
--------------------------------------------------------------------
UW03/R     20:35  01:00  2.9  0.6   0    0    0   0.8   -    0    0
UW01/R     01:00  05:27   -   5.0   -   0.5   -    0    -    -    0
(note: times listed include instrument change time)
                      -------- ACTIVITY LOG --------
Observing Specialist: Camron Hastings
	As soon as the high winds started to die down a rogue cloud formed over
the dome, and stayed there, despite the clear air throughout the rest of
southern New Mexico...
	We opened at 00:00 MDT and the clouds soon dispersed. Dust levels were
very high though, near closing. It may be a good idea to CO2 the mirror
sometime soon.
	When I opened the DIMM dome I found the DIMM laptop running and the
software running normally. I checked the time readouts and the software
reported telescope, laptop and UT. When I went in to the control room to
start the search routine remotely I saw that the search failed because
the laptop lost contact with the telescope. This happened to me once
before and I fixed it by restarting the DIMM software. When I went out
to restart I saw that the software no longer had a time readout from the
telescope either. Is this a bug with the new DIMM software? It seems
that contact was lost only when I tried to initiate a SMALLSEARCH.
	At 04:52 the rotator seemed to stop responding. It suddenly fell a
degree or so behind and all slew commands would fail, as would  commands. I re-initialized the axes with no effect. I made
a physical check and found no trouble and finally had to restart the TCC
and MC and all was fine. ??? We lost minimal time due to this trouble.
               ------------- OBSERVER COMMENTS -------------
UW01(S.Anderson): The telescope and instrument (DIS low res) performed
well (except for the rotator glitch) and the weather was good. Thanks to
Camron for providing his usual excellent observing skills.
                                FOCUS LOG
                              April 22 2000
                                                  Wind
Time   Inst        Focus      Az  El   Temp*   Dir  MPH  filt    FWHM"
-----------------------------------------------------------------------
00:10  DIS(Slit) +300(1300)  -88  33  4.1/7.4  282   12  none   ~1.90"
01:00  DIS       +000(0236)  -79  79  2.9/4.3  280   08  none    1.56"
03:05  Guider   -6000(0231)  173  57  2.7/2.8  338   12  none    1.28"
*First temp is air, second temp is primary.
                                 WEATHER
                              April 22 2000
                           Wind  Wind
     Time   Temp F Dewp F  MPH   Direction    Dust      Sky      Precip.
     -------------------------------------------------------------------
     16:01    50     7     29   261  (W)     3394      clear     none
     17:01    49    10     36   261  (W)     5867      clear     none
     18:01    47    11     22   273  (W)     3556      clear     none
     19:01    45    14     32   281  (W)     3709      clear     none
     20:01    43    16     28   280  (W)     2935     cloudy     none
     21:01    42    18     14   253  (WSW)   3073     cloudy     none
     22:01    41    20     15   271  (W)     2796     cloudy     none
     23:01    40    20      8   287  (WNW)   2464     cloudy     none
     00:01    39    20     10   269  (W)     2511   ptly cldy    none
     01:01    38    22      6   268  (W)     2572     clear      none
     02:01    38    23     12   309  (NW)    2209     clear      none
     03:01    37    23      6     0  (N)     2215     clear      none
     04:01    38    24     19   322  (NW)    2153     clear      none
     05:01    38    25     16   325  (NW)    2109     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
> 1 micron per 0.1 cu. ft.
                              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:
     2.55b5. Current guide software version: GIm Ctrlv3.0b27.  Current
     TCC version is 2.2.6.
                                   - Camron Hastings