From: "Camron Hastings"
Subject: 3.5 meter Night Log 980602
Date: Wed, 3 Jun 1998 05:37:03 -0600
			       Tuesday, June 2nd, 1998
			     APACHE   POINT  OBSERVATORY
				 3.5-Meter Observing Log
                                 ACTUAL
 ASTRONOMER      OBSERVER(S)      INSTRUMENT    DATE     START  FINISH
----------------------------------------------------------------------
C. Stubbs	     P. Palunas		GFP*		6/2	   21:47  04:16
* 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 04:16    2.0  4.5   0    0    0    0     0    0    0
(note: times listed include instrument change time)
                               ACTIVITY LOG
	The telescope opened this evening at 20:36 hours. Skies were clear, and
remained so, and dust counts low, temperatures were cool. This was the first
night of the visiting observer's Fabrey-Perot instrument, and after the
creation of the instrument block, and verification of the axes, it was on the
sky. Seeing was exceptionally good at .79"! Tonight was also the last night
of training for myself, the new Obs Specialist. Karen Gloria is on vacation
for 3 months, and Tia Hoyes and myself will be the primary night operators.
	All facility systems were in good working order with no failures this
evening. The previous nights difficulties seem to have been cured with the
maintenance performed by the day crew, thanks. We closed this morning at
05:30.
NCH
			         OBSERVER'S COMMENTS
-------------------------------------------------------------------
Report on first night (June 2/3) of observing with Goddard
Fabry-Perot at the 3.5m..
Weather:  excellent.  clear, 0.7" images with FP.
Set-up: The FP focal plane is 2 1/16 inches behind the rotator mount, the
while nominal telescope focus is approximately 8 inches (correct??) from the
mount.  As a result our focus was at an extreme value which did not enable us
to use the auto guider. It took approximately one hour to determine the
focus.  The instrument blocking took approximately three hours (10-1).  It
took an additional hour to determine the conversion between x and y telescope
offsets with North and South.  We started science exposures at 2AM.
Science: We observed on target from 2-5 but could not guide.  Subsequent 15
minute exposures were offset by about 12 pixels (2") to the southeast due to
a drift in the tracking; although no smearing was evident in most of the
images.
In order to solve the guider problem we need to construct a spacer that will
place the instrument focal plane closer to the nominal focus of the
telescope.  We have in hand a spacer ring left over from the development of
SPIcam and a plate with the FP bolt pattern as a start to constructing the
spacer.
-------------------------------------------------------------------
                               FOCUS LOG
                            June 2nd, 1998
                 Best     Telescope   Temp      Wind           Seeing
Time   Instr     Focus     Az  El   Air/Truss   Dir MPH  filter  FWHM"
----------------------------------------------------------------------
00:30   GFP   -4920/1842  237  67  17.7/18.3    300 12.3  7964   .79"
(Note: The focus value is not a mistake)
                               WEATHER LOG
                             June 2nd, 1998
                                  Wind
     Time   Temp-F Dewp-F MPH   Direction    Dust      Sky      Precip
    ------------------------------------------------------------------
     16:01    75    19      8   296  (WNW)    227	Clear	     None
     17:01    74    19     13   234  (SW)     345	Clear	     None
     18:01    74    21     12   209  (SSW)    364	Clear	     None
     19:01    74    21      5   223  (SW)     427	Clear	     None
     20:01    68    22     11   260  (W)      633	Clear	     None
     21:01    64    21     12   268  (W)      519	Clear	     None
     22:01    64    22     13   271  (W)      427	Clear	     None
     23:01    65    22      6   311  (NW)     744	Clear	     None
     00:01    65    22     11   273  (W)      739	Clear	     None
     01:01    63    22      9   305  (NW)     626	Clear	     None
     02:01    63    22      7   319  (NW)     616	Clear	     None
     03:01    63    22     12   342  (NNW)    626	Clear	     None
     04:01    62    22     14   327  (NNW)    448	Clear	     None
     05:01    60    24     11   321  (NW)     559	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 & Tia Hoyes
	_______________________________________________
	  Camron Hastings at Apache Point Observatory
  	     http://users.apo.nmsu.edu/~hastings