Date: Sat, 12 Sep 1998 07:12:31 -0600
From: Karen Gloria
Subject: 3.5-m obslog 980911
                        FRIDAY SEPTEMBER 11, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Strauss            Fan                DIS     9/11-12  20:38  04:31
Turner        Gloria, Hastings        DIS       9/12   04:31  05:21
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
PU02/R     20:38  04:31  2.8  5.1   0    0    0    0    0    0    0
PU01/S     04:31  05:21   0   0.8   0    0    0    0    0    0    0
(note: times listed include instrument change time)
                               ACTIVITY LOG
(* means a trouble report has been issued or appended to)
1st half observing specialist: Camron Hastings
2nd half observing specialist: Karen Gloria
	The observers were Xiaohui Fan for PU02 and Camron Hastings
and Karen Gloria for PU01.
	The enclosure was opened at 19:20 to dry, clear skies.  I took
some evening flats in both red and blue for the lens program later in
the night.  Xiaohui agreed to clump his time into the beginning of the
night so that we did not need to split up his run for the lens program
which would have meant meddling with the DIS setup he had dialed in.
DIS LN2 dewer repairs were made today resulting in a 90% fix, though a
small leak still is evident, it is again operational.
	At 20:40, the slit camera crashed, rebooting fixed it, though
we lost some time.  I should mention that it only works well at 38.4k,
in case this happens to anyone else.  Faster transfer speeds choke it.
	The air was EXTREMELY turbulent.  Seeing varied between
2.2"-5" at times, rendering the guider useless.  This caused problems
for the dim objects Xiaohui was working on because we could not make
corrections manually often enough off the long slit images.
	- Camron Hastings
	Xiaohui asked if we could do the PU01 observations at the end
of the night and we agreed that would be OK.  This way the DIS
configuration could stay in spectral mode, saving Xiaohui from having
to take a new set of calibration images.  Seeing gradually improved
over the second half of the night.  Xiaohui obtained good spectra for
several of his faint objects and I got some good images of
gravitational lens 0142.
	- Karen
			     OBSERVER COMMENTS
PU02 (Fan): "It's a very successful night. Although we had some
horrible seeing for the first half, with the help from Cameron and
Karen, the observation went quite smoothly. We discovered at least
five new quasars, 4 of them from the June SDSS data.  No instrument
problem to report."
                                 FOCUS LOG
                             SEPTEMBER 11 1998
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El   #Temp    Dir MPH  filter  FWHM "
20:10  DIS    + 50(6823) 118  48  12.3/14.9  62 19    none    2.2
04:30  DIS    + 50(6697) 205  44  12.4/11.0   3 10     r      1.5
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                             SEPTEMBER 11 1998
                               Wind
     Time   Temp F Dewp F  MPH   Direction   Dust      Sky      Precip.
     16:01    64    34      8    56  (NE)     541     clear      none
     17:01    63    34      0   218  (SW)     568     clear      none
     18:01    62    38      7    76  (ENE)    791     clear      none
     19:01    58    38     13    67  (ENE)    949     clear      none
     20:01    55    38     15    60  (ENE)   1021     clear      none
     21:01    53    38     20    72  (ENE)   1196     clear      none
     22:01    53    39     17    71  (ENE)   1391     clear      none
     23:01    51    40     16    72  (ENE)   1480     clear      none
     00:01    51    39     18    71  (ENE)    969     clear      none
     01:01    51    40     17    67  (ENE)    807     clear      none
     02:01    51    40     12    64  (ENE)    923     clear      none
     03:01    53    37     10    20  (NNE)   1037     clear      none
     04:01    54    --     13    10  (N)     1238     clear      none
     05:01    54    38     14   359  (N)     1216     clear      none
     06:01    54    38      9    55  (NE)    1253     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 Ctrlv3.0b15.
-Camron Hastings, Karen Gloria