From: "N.C. Hastings"
Subject: 3.5m Night Log 990414
Date: Thu, 15 Apr 1999 06:39:05 -0600
                 Apache Point Observatory, Sunspot, NM
                      Wednesday, April 14th, 1999
                     3.5-meter Night Observing Log
                                Actual
----------------------------------------------------------------------
ASTRONOMER     OBSERVER(S)       INSTRUMENT    DATE      START  FINISH
----------------------------------------------------------------------
D.York         G.Richards        DIS           4/14-15   20:59  --:--
----------------------------------------------------------------------
 INST       SCHEDULED      WEATH     EQUIP      OBS     DAY   NOTUSED
I/RS/DN   START  FINISH    D    B    D    B    D    B   USE   D    B
----------------------------------------------------------------------
UC01/R    20:59  05:08    5.4   -    0    0   2.8   -    0    0    -
               -------------- Activity Log --------------
1st Half Observing Specialist: K.A.Gloria
	The telescope was opened at 19:30 MDT.  During twilight, the wind
shifted dramatically to the east, bringing in cold air, humidity, and
a drop in the dust counts.  The seeing was just awful all evening.
Determining best focus was nearly impossible.  The poor seeing made it
difficult for Gordon to observe. We closed due to high humidity at
23:45 MDT.
2nd Half Observing Specialist: N.C.Hastings
	I was unable to open the telescope due to high humidity.
                               FOCUS LOG
                            April 14th 1999
                  Best    Telescope    Temp      Wind          Seeing
Time  Instrmnt   Focus      Az  El   Air/Truss  Dir MPH  filter FWHM"
---------------------------------------------------------------------
20:20 slitcam     0(6413)   57  66   4.4/7.4     74  16   none   2.0"
21:55 slitcam  -350(5797)  250  73   0.3/2.0     67  19   none   3.7"
22:00 guider  54895(5790)  252  72   0.1/1.8     76  19   none   4.1"
23:15 slitcam  -250(5829)   91  58  -1.2/-0.7    59  21   none   4.6"
                              WEATHER LOG
                            April 14th 1999
                                  Wind
     Time   Temp-F Dewp-F MPH   Direction    Dust      Sky      Precip
    ------------------------------------------------------------------
     16:01    48    17     21   321  (NW)    1392     clear      none
     17:01    48    16      9   350  (N)     1501     clear      none
     18:01    49    14     12   302  (WNW)   1750     clear      none
     19:01    47    12      9   351  (N)     1834     clear      none
     20:01    45    11     11     3  (N)     1717     clear      none
     21:01    36    28     23    66  (ENE)    521     clear      none
     22:01    32    27     18    62  (ENE)    315     clear      none
     23:01    30    26     21    71  (ENE)    387     clear      none
     00:01    29    25     16    73  (ENE)    502     clear      none
     01:01    28    24     12    73  (ENE)    577     clear      none
     02:01    26    21     16    76  (ENE)    595     clear      none
     03:01    25    20     12    67  (ENE)    635     clear      none
     04:01    23    20     12    78  (ENE)    632     clear      none
     05:01    22    20     11    72  (ENE)    736     clear      none
     06:01    22    20     11    82  (E)      719     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 for the
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: 2.55b2
Current guide software version: GIm Ctrl v3.0b 17.out
-  NCH, RM