Date: Sat, 29 Jan 2000 06:02:50 -0700 (MST)
From: Frank Deglman
Subject: 3.5m Night Log 20000128
                         FRIDAY JANUARY 28, 2000
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Tremaine          Holman             SPIcam   1/28-29  19:20 23:58
Strauss           Kim, Fan            DIS       1/29   00:23 01:42
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
PU04/R     18:27 00:10    0    -   1.4   -   4.4   -    0    0    -
PU07/S     00:10 06:05    0    0    0   4.4  1.2  0.3   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: Loomis
The telescope was opened at 17:30 MST.  I acquired a star on the
echelle slit camera, then switched to spicam to take twilight flats.
After the flats were done I switched back to the echelle and did a
pointing model.  It took about an hour to take and reduce the pointing
model data.  The results were good, a 59 point model with 3 arcsec
rms. and no obvious systematic error.  I tested the pointing at
several azimuths and altitudes before applying it.  The focus
zeropoint has changed as a result of last night's engineering work.  I
will make the change in the configuration file tomorrow afternoon.
I charged this time as equipment loss.
Matt Holman observed remotely with SPIcam for PU04 after the pointing
model was finished.  Some of his images were trailed by about 3
arcsec.  Others were sharp as a tack.  I don't know if the direction
of trailing was primarily azimuth or altitude.  I've logged the
trailed images as equipment loss time.
2nd half observing specialist: Deglman
Rita Kim and Xiaohui Fan observed on site with DIS for PU07.  Rotator
problems became evident around 01:30.  Jon Davis was contacted and the
telescope was closed at 02:00 to begin troubleshooting.  The DIS mount had
sagged to the point where the instrument began binding with it at various
rotation angles.   This binding apparently caused instrument rotator
damage rendering the NA2 port inoperative.  The 3.5m was not reopened.
                            OBSERVER COMMENTS
                                FOCUS LOG
                             JANUARY 28 2000
                                                 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
19:45  SPIcam   -580(-102)   108 75 -3.3/-2.5  275  10    r'    1.6
00:30  DIS	-350(139)    207 53 -4.9/-5.4    6  15   none   1.5
#First temp is air, second temp is telescope.
                                 WEATHER
                             JANUARY 28 2000
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    31     8     14   268  (W)      488     clear      none
     17:01    32     8     16   245  (WSW)    533     clear      none
     18:01    29     6     15   225  (SW)     581     clear      none
     19:01    29     5     14   257  (WSW)    830     clear      none
     20:01    26    10      1   316  (NW)    1062     clear      none
     21:01    25    11      6   287  (WNW)    936     clear      none
     22:01    25    12      9   347  (NNW)    863   ptly cldy    none
     23:01    24     9     11     5  (N)      394   ptly cldy    none
     00:01    23     6     13    16  (NNE)    296   ptly cldy    none
     01:01    23     8     11   343  (NNW)    400   ptly cldy    none
     02:01    24    10     12   322  (NW)     503    sl cirrus   none
     03:01    24     6     11   317  (NW)     287     cirrus     none
     04:01    23     6     12   319  (NW)     353     clear      none
     05:01    22     4      9   346  (NNW)    320     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 2.2.2.
- Karen Loomis, Frank Deglman