From: "Camron Hastings"
Subject: 3.5 meter Night Log 980603
Date: Thu, 4 Jun 1998 06:21:31 -0600
			      Wednesday, June 3nd, 1998
			     APACHE   POINT  OBSERVATORY
				 3.5-Meter Observing Log
                                 ACTUAL
 ASTRONOMER      OBSERVER(S)      INSTRUMENT    DATE     START  FINISH
----------------------------------------------------------------------
C. Stubbs	     P. Palunas		GFP*	      6/3-4	   21:47  03:20
E. Turner	     C. Hastings	      SPIcam	 6/4     03:50  04:15
* Goddard Fabery-Perot imager
 INST        SCHEDULED       OBS      WEATH     EQUIP    DAY   NOTUSED
I/RS/DN    START FINISH    D    B    D    B    D    B    USE   D    B
-----------------------------------------------------------------------
UW09/S     21:47 03:20    .5   1.3   0   3.7   0    0     0    0    0
PU01/S     03:50 04:15    .2    -    0    -   .1    -     0    0    -
(note: times listed include instrument change time)
                               ACTIVITY LOG
	The telescope opened this evening at 20:37 hours. The sky started
cloudy early on, and we were delayed in starting the instrument block.
Dan Long came down to help out, and was helpful in explaining a number
of things regarding the telescope. Shooting through clouds, we were
finally able to finish the instrument block and focus, so when the clouds
cleared at 01:30, we were on the sky. The new spacer made for the GFP
worked wonderfully, and placed the instrument far enough away that normal
focus values were obtained. This allowed us to use the guider the last
half of the evening, which worked as it should. There is some noise being
picked up,possibly in the frayed wiring though, it is apparent on the
images, and is varying in frequency. (Note: The replacement wiring has
already been ordered)
	Last part of the evening was spent on the lens monitoring program.
The switch to SPIcam went fine, though there was a strange focus problem
with SPIcam it seemed. There were possible internal reflections that I
had not noticed before, and the best focus I could obtain to get in focus
was over 2". This was a big shift from GFP's 1".
-Cam
			         OBSERVER'S COMMENTS
-------------------------------------------------------------------
Goddard FP  APO 3.5m
Date:  June 3/4 1998
Weather:  Cloudy until 1:30AM, clear the rest of the night.
The new interface plate did allow confocality for the FP and the guider,
which resulted in successful guiding while observing.  We thank the
Sunspot machinists for doing such a wonderful job on such short notice.
Due to the new spacer, we repeated the instrument blocking procedure.
We discovered that object offsets appear to be superior to instrument
offsets for field rotations in order to find guide stars.  Scattered
moonlight was present in some of our images. We should investigate tube
baffling to remedy this.
-------------------------------------------------------------------
                               FOCUS LOG
                            June 3rd, 1998
                 Best     Telescope   Temp      Wind           Seeing
Time   Instr     Focus     Az  El   Air/Truss   Dir MPH  filter  FWHM"
----------------------------------------------------------------------
22:45  GFP    -200/6569   130  47  16.6/15.0    243  21   9200   .98"
00:15  GFP     150/6466   163  58  13.5/14.7    243  20   9200  1.07"
03:55  Spicam -370/6135   117  40   8.8/10.7    235  17    g'   2.10"
(Note: The focus values for the GFP changed so dramatically due to a
change in the instrument block. Also, the FWHM for SPIcam is most
likely due to a possible hardware or operator problem.)
                               WEATHER LOG
                             June 3rd, 1998
                                  Wind
     Time   Temp-F Dewp-F MPH   Direction    Dust      Sky      Precip
    ------------------------------------------------------------------
     16:01    71    22     30   267  (W)      605    Clear      None
     17:01    73    25     22   231  (SW)     841    Clear      None
     18:01    66    22     24   236  (SW)    1568   Ptly Cldy   None
     19:01    66    18     30   251  (WSW)   2427   Ptly Cldy   None
     20:01    63    17     21   260  (W)     1723    Cloudy     None
     21:01    62    18     15   273  (W)     2248    Cloudy     None
     22:01    60    18     19   250  (WSW)   2568    Cloudy     None
     23:01    59    19     29   239  (WSW)   2266   Ptly Cldy   None
     00:01    57    22     25   243  (WSW)   1492   Ptly Cldy   None
     01:01    55    25     27   240  (WSW)    956   Ptly Cldy   None
     02:01    53    23     19   233  (SW)    1017    Clear      None
     03:01    52    21     16   265  (W)      829    Clear      None
     04:01    48    20     14   240  (WSW)    971    Clear      None
     05:01    48    24     18   266  (W)     1030    Clear      None
     06:01    48    25     16   264  (W)      899    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: 2.41a
Current guide software version: GIm Ctrl v3.0b 15.out
- Camron Hastings