Date: Fri, 29 May 1998 06:07:32 -0600 (MDT)
From: Tia Hoyes
Subject: 3.5m obslog 980528
                         THURSDAY   MAY  28, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER       OBSERVER          INSTRUMENT   DATE   START FINISH
York             Richards             DIS       5/28   19:00 00:58
Anderson      Anderson/Beck          SPICAM     5/28   01:12 06:30
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UC02/R     21:43 01:10   2.2  1.3   0    0    0    0    0    0    0
UW05/R     01:10 04:18   3.1  0.0   0    0    0    0    0    0    0
(note: times listed include instrument change time)
                               ACTIVITY LOG
The telescope was open tonight at 20:20.  Gordon Richards was observing with
DIS for the first half of the evening.
Comments:Did pretty well tonight, though we got a slow start as a result of
some atypical problems.  We were able to get a nice spectrum of one of
our QSO absorption line targets.  Three 30 minute exposures gave
S/N>60 in the blue for this V~17 target with the medium resolution
gratings.  The slowness of the arc lamp web page (sometimes over 1
minute to turn on the lights!) made it cumbersome to take arcs between
exposures.
Gordon
The problem Gordon mentioned was as follows: slewed to a standard; found it on
the Slit Viewer; completely lost it; reslewed; could not find it; moved on to
another standard.
Scott Anderson and Bernhard Beck-Winchatz observed for the second half of the
evening with SPICAM.
Comments:Instrument, telescope, support, and weather were all quite good again,
although seeing was moderate at about 1.4+-0.2" most of evening.
Good science data were collected, plus a little more data relevent
to calibration of new SPIcam shutter opening time (and hence
accuracy of exposure times requested and listed in headers).
--Scott and Bernhard
(* means a trouble report has been issued or appended to)
                               FOCUS LOG
                             MAY  28, 1998
                Best     Telescope               Wind                 Seeing
Time   Inst     Focus     Az    El   Temp#      Dir  MPH     filter   FWHM "
21:30  DIS   -200(6675) 189.9  74.7 16.5/18.52 265.7 5.9      empty   ----*
01:30 SPICAM -250(6500) -165.2 55.8 15.2/15.71 332.7 9.8       B      1.0
03:35 SPICAM -250(6439) -21.9  53.3 15.1/14.96 350.7 10.3      I      1.5
# The first temp is air, the second is truss, both in degrees C.
* Due to calibrations in spectral mode, we were not able to image for focus.
  These were best guess values based on slit viewer.
                                 WEATHER
                               MAY  28,  1998
                                 Wind
    Time   Temp F Dewp.   MPH.    Dir.       DUST     Sky         Precip.
     16:01    73    13      8   243  (WSW)   1400    clear         none
     17:01    70    11     14   217  (SW)    1465  light clouds    none
     18:01    68     9     10   266  (W)     1493    clear         none
     19:01    66    12     12   288  (WNW)   1621    clear         none
     20:01    63    13      8   234  (SW)    1858    clear         none
     21:01    62    14     11   235  (SW)    1861    clear         none
     22:01    62    14      6   249  (WSW)   1833    clear         none
     23:01    62    15      8   265  (W)     1967    clear         none
     00:01    62    13      5   291  (WNW)   2245    clear         none
     01:01    60    14      4   327  (NNW)   2332    clear         none
     02:01    60    12      6   340  (NNW)   2297    clear         none
     03:01    59    10      9   315  (NW)    2322    clear         none
     04:01    59     6      6   353  (N)     2364    clear         none
     05:01    59     9      3   326  (NW)    2454    clear         none
     06:01    59    10      5   343  (NNW)   2225    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: 2.41
Current guide software version:GIm Ctrl v3.0b 15.out
-Tia