Date: Wed, 23 Dec 1998 07:27:46 -0700 (MST)
From: Russet McMillan
Subject: 3.5m Night Log 981222
Content-Length: 2973
                         TUESDAY DECEMBER 22, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Turner            Gloria             SPIcam     12/22  18:30 18:43
Diercks       Deutsch, Diercks       SPIcam   12/22-23 18:43 00:10
Vandenberk      Vandenberk            DIS       12/23  00:10 05:34
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
PU01/S     18:30 18:43    -    0    -    0    -   0.2   0    -    0
DD01/R     18:43 00:10    0    0    0    0   3.4  1.9   0    0    0
UC05/R     00:10 05:34    0    0    0    0   5.4   0    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: Karen Gloria
NM07, which was scheduled for most of the first half of the night, was
preempted by DD01.  Part of PU01, was also preempted.  We had some
cirrus and gusty SW winds, plus the occasional net slowdown.  Otehr
than that there were no problems to report.
2nd half observing specialist: Russet McMillan
Second half was mostly clear with just occasional puffs of cirrus,
still windy, with lousy seeing.  DIS behaved well, without dumping
lN2.
There was a strange occurrence with the slit camera; the orientation
seems to have changed.  I noticed that when I requested a negative X
offset in Remark, a positive X command was issued through the mcnode.
When I requested a positive X offset, the command gave negative X.
This worked out all right: I thought I needed a negative move, I
requested a negative move, and the positive move that was commanded
put the star where I wanted it.  In Y, however, it was a different
story.  Remark and the mcnode agreed with each other, but suddenly a
negative Y offset moved the star down on the slit viewer and a
positive one moved it up.  I have no idea how this happened.  The
rotator was at Object 0 rotation, and the offsets were all Instrument
offsets.
                            OBSERVER COMMENTS
                                FOCUS LOG
                             DECEMBER 22 1998
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
18:20 SPIcam  -200(5886)    228  48 -0.1/+0.3  270  16    r'    2.2
18:25 guider 50475(5886)    230  47 +0.2/+0.3  256  26  R+ND2   1.9
18:55 SPIcam  -150(5916)    103  51 +0.1/+0.1  253  23    R     1.2
19:45 SPIcam  -165(5849)    115  61 +0.1/-0.1  248  24    R     1.1
00:30 DIS        0(6094)     35  32 -0.3/-1.0  214  21   none   2.5
#First temp is air, second temp is telescope.
                                 WEATHER
                             DECEMBER 22 1998
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    35     8     16   235  (SW)             cirrus     none
     17:01    32     6     11   220  (SW)             cirrus     none
     18:01    32     5     15   264  (W)              cirrus     none
     19:01    32     4     24   258  (WSW)            cirrus     none
     20:01    33     6     24   259  (W)              cirrus     none
     21:01    33     3     17   266  (W)              cirrus     none
     22:01    33     3     17   253  (WSW)            cirrus     none
     23:01    33     6     21   234  (SW)             cirrus     none
     00:01    32     7     11   231  (SW)             cirrus     none
     01:01    32     9     20   229  (SW)             cirrus     none
     02:01    30    12     15   215  (SW)             cirrus     none
     03:01    31    12     21   237  (WSW)            cirrus     none
     04:01    32    10     23   249  (WSW)            cirrus     none
     05:01    31    10     19   251  (WSW)            cirrus     none
     06:01    31    11     20   263  (W)              cirrus     none
     07:01    29    11     19   243  (WSW)            cirrus     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: 2.42a.
Current guide software version: GIm Ctrlv3.0b15.
- Karen Gloria, Russet McMillan