Date: Sat, 25 Apr 1998 05:26:47 -0600 (MDT)
From: Karen Gloria
Subject: 3.5-m obslog 980424
                          FRIDAY APRIL 24, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Staff             Gloria             SPIcam     4/24   21:09 21:24
Secker        Secker, Brown          SPIcam   4/24-25  21:24 01:10
Cooray            Cooray              DIS       4/25   01:10 04:54
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
EN00/S     21:09 21:24   0.3   -    0    -    0    -    0    0    -
WS01/S     21:24 01:10   3.8   -    0    -    0    -    0    0    -
UC03/R     01:10 04:54   3.7   -    0    -    0    -    0    0    -
(note: times listed include instrument change time)
                               ACTIVITY LOG
(* means a trouble report has been issued or appended to)
The telescope was opened at 19:00 MDT.  It was closed from 19:20 to
20:40 MDT, due to dust.  This prevented WS01 from getting twilight
flats.  The observers were Jeff Brown and Jeff Secker for WS01, and
Asantha Cooray for UC03.  The seeing was rather poor tonight.  I used
some drop in engineering time at the beginning of the night to check
the collimation.  Aside from the poor seeing and dust, there were no
problems of note other than the guider crashing once.
			     OBSERVER COMMENTS
                                 FOCUS LOG
                               APRIL 24 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El   #Temp    Dir MPH  filter  FWHM "
20:50 SPIcam  -175(6322) 222  64  9.9/11.7  246  24    B      1.2
21:55 SPIcam  -175(6242)  93  65  9.0/9.7   263  21    R      1.9
23:30 SPIcam  -220(6127) 208  74  8.2/8.5   269  25    I      1.5
00:25 SPIcam  -220(6118) 236  66  7.3/7.8   265  16    B      2.3
01:30 GRIM2   -150(6338) 206  63  6.8/7.1   261  22    J      1.4
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                              APRIL 24 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.	  Dir.       Dust     Sky       Precip.
     16:01    59    15     24   218  (SW)    2511    clear       none
     17:01    56    13     29   264  (W)     2235    clear       none
     18:01    55    13     32   263  (W)     1285    clear       none
     19:01    53    17     28   266  (W)     1593    clear       none
     20:01    50    13     18   270  (W)     2203    clear       none
     21:01    50    15     21   250  (WSW)   1595    clear       none
     22:01    48    14     18   265  (W)     1583   ptly cldy    none
     23:01    46    18     22   271  (W)     1155   ptly cldy    none
     00:01    46    17     16   265  (W)     1192   ptly cldy    none
     01:01    45    17     20   267  (W)     1235   ptly cldy    none
     02:01    43    16     22   265  (W)     1125   ptly cldy    none
     03:01    42    19     18   267  (W)     1010    clear       none
     04:01    41    21     16   282  (WNW)    946    clear       none
     05:01    41    26     18   279  (W)      839   mstly cldy   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: 2.39.
Current guide software version: GIm Ctrlv3.0b11.
-Karen