Date: Fri, 26 Jun 1998 06:46:04 -0600 (MDT)
From: Tia Hoyes
Subject: 3.5m obslog 980625
                        THURSDAY   JUNE  25, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER       OBSERVER          INSTRUMENT   DATE   START FINISH
Tremaine         Holman              SPICAM     6/25   19:15 01:00
Zucker           Zucker              SPICAM     6/25   01:25 03:55
Turner           Hoyes               SPICAM     6/25   03:55 05:30
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
PU03/O     21:57 01:10   3.2   0    0    0    0    0    0    0    0
UW06/R     01:10 03:35   2.4   0    0    0    0    0    0    0    0
PU01/O     03:35 04:15   0.7   0    0    0    0    0    0    0    0
(note: times listed include instrument change time)
                               ACTIVITY LOG
The telescope was open tonight at 19:00.  Matt Holman was on site to observe
with SPICAM.
Comments:Everything was fine this night.  The guiding seemed to not degrade
the image quality tonight, although the seeing was not great in
any case.
No problems to report.
--Matt
Dan Zucker was available for the second half of the evening.
Comments:The weather cooperated for my observing time, but the telescope seemed
a bit cantankerous. I was trying to do driftscanning on the field of a
galaxy but kept getting trailing. I switched to stare mode
observations, and some of those were a bit trailed too. Tia did a
track/pterr after each slew, and that seemed to help, but the stars in
unguided exposures of more than a minute or so were a bit elongated. I
did manage to get a few stare-mode exposures of the galaxy. At the end
of my run I was able to do a somewhat successful driftscan, although
the last frame was truncated.
The data transfer time was painfully slow (1 - 2 minutes), which may be
because I was saving my data to /export/images on Tycho. There is not
much room on either /rot1 or /rot2 -- would observers with old SPIcam
data on those disks *please* remove them?
Seems the tracking problem was evident tonight.
I observed for the Lens Monitoring program.  No problems.  I observed 2237.
(* means a trouble report has been issued or appended to)
                               FOCUS LOG
                             JUNE  25, 1998
                Best     Telescope               Wind                 Seeing
Time   Inst     Focus     Az    El   Temp#      Dir  MPH     filter   FWHM "
21:15 SPICAM  -310(6612) 70.8  72.3 20.3/21.83 254.0 10.3      r'     1.5
21:35 GUIDER    53490   229.1  44.7 20.4/21.57 248.9 12.8    empty    1.80
23:40 SPICAM  -320(6706)207.9  34.0 20.1/20.44 268.3 11.5      r'     1.3
04:00 SPICAM  -300(6553) 34.9  49.4 18.8/18.71 274.2  9.3      g'     0.90
# The first temp is air, the second is truss, both in degrees C.
                                 WEATHER
                               JUNE  25,  1998
                                 Wind
    Time   Temp F Dewp.   MPH.    Dir.       DUST     Sky         Precip.
     16:01    75    32     17   269  (W)      567  light clouds    none
     17:01    75    32     13   272  (W)      648  light clouds    none
     18:01    74    31     20   262  (W)      750  light clouds    none
     19:01    74    32     13   263  (W)      602  light clouds    none
     20:01    71    33     14   228  (SW)     682  light clouds    none
     21:01    67    33     10   218  (SW)     750  light clouds    none
     22:01    69    32      9   262  (W)      793  light clouds    none
     23:01    68    32     10   272  (W)     1073  mostly clear    none
     00:01    68    32      6   268  (W)      981    clearing      none
     01:01    65    31      8   303  (WNW)    789     clear        none
     02:01    65    31     14   281  (W)      575     clear        none
     03:01    66    29     13   279  (W)      663     clear        none
     04:01    66    30     10   273  (W)      623     clear        none
     05:01    65    29     12   287  (WNW)    515     clear        none
     06:01    65    26     12   274  (W)      488     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: 2.41a
Current guide software version:GIm Ctrl v3.0b 15.out
-Tia