Date: Sat, 15 May 1999 06:06:08 -0600 (MDT)
From: Russet McMillan
Subject: 3.5m Night Log 990514
                           FRIDAY MAY 14, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Strauss         Strauss, Fan          DIS     5/14-15  21:29 00:58
Krisciunas      McMillan            SPIcam      5/15   01:23 02:10
Wallerstein     Hughes              SPIcam      5/15   02:10 04:30
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
PU01/R     21:29 01:10    0    -    0    -   3.7   -    0    0    -
UW02/S     01:10 02:10    0    -    0    -   1.0   -    0    0    -
UW09/S     02:10 04:30    0    -    0    -   2.3   -    0    0    -
(note: times listed include instrument change time)
                              ACTIVITY LOG
(* means a trouble report has been issued or appended to)
Observing specialist: R. McMillan
The night was very clear, with moderate winds and dust.
Interestingly, although our seeing was not excellent, the 3.5m got
better seeing than either DIMM or the 2.5m for most of the night,
until the temperature began to drop rapidly before morning twilight.
* During the test-slew procedures at the beginning of the night, a few
problems were encountered, including the telescope trying to slew to a
different place than it had been commanded.  These were cleared up
when the TCC and mc were restarted.
DIS was on first half, and showed rather poor pointing.  We had two
pointing corrections larger than 30 arcseconds.  The tracking was
good, however (in object rotation), and we obtained some good data.
SPIcam was on second half; we had one bias image with a little bit of
the low-level diagonal noise that has been scene in the past, but this
was even less defined than usual, and it went away after a few images.
                            OBSERVER COMMENTS
X. Fan (PU01):
 Everything went very smoothly, and lot of good data.
                                FOCUS LOG
                               MAY 14 1999
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
21:00  slitcam   +20(6771)   86  46 12.2/13.2  240   27   --
21:15  guider  +4151         86  45                             1.2
22:25  slitcam  +130(6788)  205  54 12.4/12.4  247   20   --    1.4
01:30  SPIcam    -25(6436)  157  66 10.3/10.5  268   20    R    1.14
04:45  SPIcam      0(6380)  -57  65  8.3/8.5   294   24    B    1.11
#First temp is air, second temp is telescope.
                                 WEATHER
                               MAY 14 1999
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    63    15     15   256  (WSW)   1425     clear      none
     17:01    63    14     27   251  (WSW)   1214     clear      none
     18:01    63    13     21   264  (W)     1771     clear      none
     19:01    60    14     16   258  (WSW)   1434     clear      none
     20:01    56    13     20   252  (WSW)   1899     clear      none
     21:01    54    12     20   248  (WSW)   1535     clear      none
     22:01    54    13     11   255  (WSW)   1596     clear      none
     23:01    53    12     13   265  (W)     1375     clear      none
     00:01    53    16     19   269  (W)     1414     clear      none
     01:01    52    18     14   249  (WSW)   1355     clear      none
     02:01    51    18     16   271  (W)     1492     clear      none
     03:01    49    21     19   294  (WNW)   1495     clear      none
     04:01    48    22     21   278  (W)     1451     clear      none
     05:01    47    23     21   299  (WNW)   1587     clear      none
     06:01    46    24     17   277  (W)     1669     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: 2.52
Current guide software version: GIm Ctrlv3.0b17.
- Russet McMillan