Date: Mon, 7 Sep 1998 06:03:41 -0600
From: tia@tycho.apo.nmsu.edu (Tia Hoyes)
Subject: 3.5m obslog 980906
                         SUNDAY  SEPTEMBER 6, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER       OBSERVER          INSTRUMENT   DATE   START FINISH
Herald             Bell               GRIM2     9/06   19:00 01:00
Turner/Gillespie   Hoyes           DIS/GUIDER   9/06   01:35 06:00
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UC06/R     20:46 00:55    0   3.2   0    0    0   1.0   0    0    0
PU01/EN01/S00:55 05:17    0   4.4   0    0    0    0    0    0    0
(note: times listed include instrument change time)
                               ACTIVITY LOG
The telescope was opened at 19:30.
Eric Bell began observing with GRIM2 at 19:30.
COMMENTS:
Apart from a most strange GRIM crash (it slowed down gradually and
stopped!), tonight was very good.  The sky brightness is similar to last
nights, at about 8K counts per 5 second exposure in K'.  I lost around an
hour of time with the GRIM crash.  The average seeing was around 1.5
arcsec and variable...  Thanks for your help getting GRIM re-started...
Eric :)
I rebooted the GRIM MAC and Grim worked fine.
I spent about 30 minutes testing the rotator from the observing level to make
sure it would not catch on DIS (the cable).  After confirming that it would
work, I observed for the Lens Monitoring, both 2237 and 0142.  I observed for
quite some time, since we have not been able to get any data for this program
lately.
I then began testing the GUIDER.  All commands seem to work and I was able to
focus and guide.  I let the it guide for about 20 minutes to be sure there
were no problems.  I will be able to do a pointing model Monday night as we
have open time, and now I am sure everything is in working order.
No other problems to report.
Forecast:(4:30am)
.TODAY...FAIR THIS MORNING. PARTLY CLOUDY IN THE AFTERNOON WITH
ISOLATED THUNDERSTORMS.
.TONIGHT AND TUESDAY...FAIR TO PARTLY CLOUDY.
(* means a trouble report has been issued or appended to)
                               FOCUS LOG
                            SEPTEMBER 6, 1998
                Best     Telescope               Wind                 Seeing
Time   Inst     Focus     Az    El   Temp#      Dir  MPH     filter   FWHM "
19:45 GRIM2 +150(7034)  -90.2  61.6 ?/16.17    85.8  14.9     K prim  1.25
23:15 GRIM2  -25(6774)   78.6  49.0 ?/13.08    79.0  17.1     K prim  1.87
03:10  DIS  -150(66330  239.0  43.0 ?/11.80    73.6  18.7     IN      1.60
05:10 GUIDER  53000     167.2  46.9 ?/11.12    81.6  19.7     empty   1.71
# The first temp is air, the second is truss, both in degrees C.
                                 WEATHER
                           SEPTEMBER  6,  1998
                                 Wind
    Time   Temp F Dewp.   MPH.    Dir.       DUST     Sky         Precip.
     16:01    32    32      7    83  (E)      450    clear         none
     17:01    32    32      4    89  (E)      424    clear         none
     18:01    32    32     12   124  (SE)     781    clear         none
     19:01    32    32     12    86  (E)      671    clear         none
     20:01    32    32     16    80  (E)      750    clear         none
     21:01    32    32     18    79  (ENE)    809    clear         none
     22:01    32    32     15    78  (ENE)    795    clear         none
     23:01    32    32     21    77  (ENE)    695    clear         none
     00:01    32    32     18    72  (ENE)    734    clear         none
     01:01    32    32     22    74  (ENE)    839    clear         none
     02:01    32    32     18    73  (ENE)    855    clear         none
     03:01    32    32     20    79  (ENE)   1165    clear         none
     04:01    32    32     16    86  (E)     1145    clear         none
     05:01    32    32     18    88  (E)     1260    clear         none
     06:01    32    32     15    83  (E)     1010    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: 2.42a
Current guide software version:GIm Ctrl v3.0b 15.out
-Tia