Date: Fri, 15 Jan 1999 07:42:25 -0700 (MST)
From: Russet McMillan
Subject: 3.5m Night Log 990114
		     Apache Point Observatory, Sunspot, NM
		         Thursday, January 14th, 1999
                     3.5-meter Night Observing Log
					  Actual
-----------------------------------------------------------------------
ASTRONOMER       OBSERVER(S)     INSTRUMENT      DATE     START  FINISH
-----------------------------------------------------------------------
E.Turner         C.Hastings       SPIcam         1/14     18:46  19:31
E.Grebel         E.Grebel         SPIcam         1/14     19:31  23:58
D.York           G.Richards       DIS            1/15     00:23  05:39
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 INST       SCHEDULED      WEATH     EQUIP      OBS     DAY    NOTUSED
I/RS/DN   START  FINISH    D    B    D    B    D    B   USE    D    B
-----------------------------------------------------------------------
PU01/S    18:46  19:31     0    -    0    -   0.8   -    0     0    -
UW13/S    19:31  00:10     0    -    0    -   4.3   -    0     0    -
UC01/R    00:10  05:39     0    0    0    0   5.1  0.4   0     0    0
               -------------- Activity Log --------------
1st Half Observing Specialist: Camron Hastings
The telescope was opened at 16:30 MST for cooling. Ran into the
scattered light problem with SPIcam same as last night. I have come to
a conclusion with respect to evening flats. I band shows the scattered
light the worst, and the light it is getting is coming from the
sunset, off the inside of the tertiary from the inside of the dome,
not through the rotator. Jon Brinkman also believed this to be the
case last night. If you point 30 degrees of the horizon, directly into
the sunset, or directly away from it you get very little structure,
but still noticeable gradient along one side of the chip.  Pointing
the telescope due east, and at zenith is the only place to avoid the
scattered light. While we were seeing scattered light in the I band
images there was no evidence in either B, g' or V at any pointing this
evening.
Upon finishing flats and beginning the focusing for the evening I had
everything commence dying. First, I was focusing the guider when I
noticed that the gfocus script was going nowhere. I checked the TCC
window and saw no activity. I tried a 'gcam doread' command and this
proceeded to lock the TCC. At least I could not get a reply from
anything I would try to type in.  Time was fleeting, so instead of
rooting out what could be wrong I restarted the TCC, then restarted
the MC, and then restarted the guider. After all this I still received
no reply from the guider. I noticed that the GCAMUSER process was not
running for some reason. This was quite odd, since I had just
restarted everything. I restarted the GCAMUSER process, tried a 'gcam
doread' and all worked fine from then on out.
2nd Half Observing Specialist: Russet McMillan
Second half was clear and uneventful.
		          OBSERVER COMMENTS
G.Richards (UC01):
Quite productive.  No problems to speak of.
                               FOCUS LOG
                           January 14th 1999
                   Best    Telescope    Temp      Wind          Seeing
 Time  Instrmnt    Focus     Az   El   Air/Truss  Dir MPH  filter FWHM"
----------------------------------------------------------------------
18:30  SPIcam   -020(6282)  -104  28   1.7/2.6    008  13    g'   1.34"
20:40  SPIcam   -200(6015)  -104  62   3.7/3.5    016  12    I    1.27"
00:30  slitcam   -50(6190)    60  59   4.6/3.3     16  16   none   ??
                              WEATHER LOG
                           January 14th 1999
                                  Wind
     Time   Temp-F Dewp-F MPH   Direction    Dust      Sky      Precip
    ------------------------------------------------------------------
     16:01    37     7      1   269  (W)              clear      none
     17:01    37    -7     10     2  (N)              clear      none
     18:01    35   -10     12    17  (NNE)            clear      none
     19:01    36    -9      3    14  (NNE)            clear      none
     20:01    39    -6     13   351  (N)              cirrus     none
     21:01    38    -7     15    16  (NNE)            clear      none
     22:01    38    -7     14    26  (NNE)            clear      none
     23:01    38    -6     16    31  (NNE)            clear      none
     00:01    39    -6     18    36  (NE)             clear      none
     01:01    40    -5     17    13  (NNE)            clear      none
     02:01    38    -6     16    15  (NNE)            clear      none
     03:01    38    -5     15    14  (NNE)            clear      none
     04:01    39    -4     13    11  (N)              clear      none
     05:01    39    -4      0   174  (S)              clear      none
     06:01    40    -5      2   333  (NNW)            clear      none
     07:01    41    -4     11   322  (NW)             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: 2.42a
Current guide software version: GIm Ctrl v3.0b 15.out
- NCH, RM