From: Russet McMillan
Subject: 3.5m Night Log 20000119
Date: Thu, 20 Jan 2000 07:12:15 -0700 (MST)
                         WEDNESDAY JANUARY 19, 2000
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Chanover       Chanover, Hillman      AOTF      1/19   18:20 23:58
               Meyers, Kuehn
York             Mallouris           Echelle    1/20   00:23 06:08
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
NM02/S     18:20 00:10    -   0.8   -   0.1   -   4.9   0    -    0
UC09/R     00:10 06:08    -    0    -    0    -   6.0   0    -    0
(note: times listed include instrument change time)
                              ACTIVITY LOG
(* means a trouble report has been issued or appended to)
1st half observing specialist: Deglman
NA2 guider has been reinstalled but is still disconnected.  The telescope
opened at 16:50 under slighty cirrus skies.  NM02 was performed with AOTF.
A pointing error occured in the altitude axis due to misreading of a
magnesensor. Problem was corrected by reslewing the scope past several of
the magnesensors and "returning" to the object.
2nd half observing specialist: McMillan
* When we moved the telescope for the instrument change, we had a couple
of problems.  Firstly, the TCC decided to send the telescope to an
azimuth of -180 (the clockwise limit) instead of +180 as commanded.
Secondly, the rotator was imbalanced and tipped AOTF over to -90
degrees when a stop button was pushed, causing it to dump nitrogen.
Since the instrument was dismounted and re-filled immediately
afterward, no harm was done.
The weather started out slightly cirrusy but improved as the morning
progressed.  We were apparently on a boundary between two different
airmasses, as the temperature changed rapidly with each shift in the
wind.  This caused variable seeing and some difficulty in keeping the
echelle focused, but otherwise posed no severe problems.
                            OBSERVER COMMENTS
                                FOCUS LOG
                             JANUARY 19 2000
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
18:55  AOTF    +430(764)    208  80  9.4/9.0     9   9    H     ?
22:35  AOTF    +300(740)    250  34  6.5/7.4    96   9    K     ?
12:25  Echelle  142(262)     41  64  8.9/8.0   155   6  clear  0.88
02:45  Echelle -192(-206)    43  78  2.9/5.3    80   9  clear  2.16
04:05  Echelle   12(-35)    -36  79  4.8/4.8    85   5  clear  1.01
#First temp is air, second temp is telescope.
                                 WEATHER
                             JANUARY 19 2000
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    48    14     12   356  (N)      404     cirrus    none
     17:01    47    14      4    11  (N)      482    ptly cldy  none
     18:01    49     7     16    19  (NNE)    410     cirrus    none
     19:01    47     4      9     2  (N)      292     cirrus    none
     20:01    46     9     11    36  (NE)     389     cirrus    none
     21:01    46    12      9   357  (N)      479     cloudy    none
     22:01    44    15      9     6  (N)      520    ptly cldy  none
     23:01    46    10     10    46  (NE)     335     clear     none
     00:01    50     0      2    95  (E)      158     clear     none
     01:01    47    -1      3   178  (S)      177   mstly clr   none
     02:01    44     6      4   175  (S)      355   mstly clr   none
     03:01    42    14      2   113  (ESE)    577   mstly clr   none
     04:01    42    15      1   115  (ESE)    721     clear     none
     05:01    44    15      3   191  (S)      772     clear     none
     06:01    45    16      9   194  (SSW)    658   mstly clr   none
     07:01    41    15     14   205  (SSW)    774   mstly clr   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 2.2.2.
- Frank Deglman, Russet McMillan