Date: Thu, 14 Jan 1999 07:06:17 -0700 (MST)
From: Russet McMillan
Subject: 3.5m Night Log 990113
		     Apache Point Observatory, Sunspot, NM
		         Wednesday, January 13th, 1999
                     3.5-meter Night Observing Log
					  Actual
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ASTRONOMER       OBSERVER(S)     INSTRUMENT      DATE     START  FINISH
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E.Grebel         E.Grebel         SPIcam         1/13     18:45  23:58
D.York           G.Richards       DIS            1/14     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
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UW13/S    18:45  00:10     0    -    0    -   5.4   -    0     0    -
UC01/R    00:10  05:39     0   1.0   0    0   4.2  0.3   0     0    0
               -------------- Activity Log --------------
1st Half Observing Specialist: Camron Hastings
	The telescope was opened at 16:30 MST for cooling. No problems
to report.  Eva began her flats early due to narrow band filters and
all went smoothly.  Had a funny problem later when the telescope
refused to slew to a very nearby position. I kept getting a complaint
that the calculation had not converged within 30 seconds, but I
received this error after about 10 seconds. It turns out that we were
very near the position where the telescope needed to unwind, after
this was accomplished it worked fine.
2nd Half Observing Specialist: Russet McMillan
Second half was characterized by cirrus and high winds.  The wind
forced a closure from 04:20 to 05:20, but we managed to get another
science exposure before dawn.
The telescope and DIS behaved well for the most part, but a few small
glitches were apparent.  Gordon's Remark crashed at the end of the
morning for unknown reasons; the net seemed fine at the time.  The
cloud camera, as it has on most recent nights, got stuck in its
northernmost position, requiring a power cycling and manual
repositioning -- this familiar problem seems to be getting more
frequent.  Also, two strange objects (one represented by the
astronomical symbol for Earth) appeared on the cloud camera just west
of the meridian and proceeded to set in the southwest near the end of
second half.
			 OBSERVER COMMENTS
G.Richards (UC01):
Not too bad of a night given the clouds.  Had to close up
a bit early due to high winds, but managed to get in one
more shot before sunrise.  Curiously, both the moon and
the earth rose instantaneously at 21:50 in the cloud camera
images.
                               FOCUS LOG
                           January 13th 1999
                   Best    Telescope    Temp      Wind          Seeing
 Time  Instrmnt    Focus     Az   El   Air/Truss  Dir MPH  filter FWHM"
----------------------------------------------------------------------
18:30  SPIcam    000(6064) -001   54  -0.2/ 0.5   008  11    I    1.29"
19:35  SPIcam   -100(5935) -008   53  -0.2/-0.3   013  08  HAlpha 0.78"
20:00  SPIcam   -160(5871)  002   55   0.2/-0.1   004  14    I    0.83"
23:10  SPIcam   -180(5971)  172   35   0.6/ 0.3   003  22    I    0.88"
00:40  slitcam     0(6029)   59   60  -0.1/-0.3    18  26   none   ?
                              WEATHER LOG
                           January 13th 1999
                                  Wind
     Time   Temp-F Dewp-F MPH   Direction    Dust      Sky      Precip
    ------------------------------------------------------------------
     16:01    33    18      1   334  (NNW)            Clear      None
     17:01    32    18     12     7  (N)            High Cirrus  None
     18:01    32    12     11    35  (NE)             cirrus     none
     19:01    32    15     12    19  (NNE)            cirrus     none
     20:01    32    10     14    22  (NNE)            cirrus     none
     21:01    33     6     17   359  (N)              cirrus     none
     22:01    33     7     20    10  (N)              cirrus     none
     23:01    33    11     20     7  (N)              cirrus     none
     00:01    32    12     19    21  (NNE)           mstly clr   none
     01:01    33    14     19    23  (NNE)           mstly clr   none
     02:01    32    15     24    24  (NNE)           ptly cldy   none
     03:01    31    14     25    30  (NNE)           ptly cldy   none
     04:01    28    12     21    62  (ENE)           mstly clr   none
     05:01    26    12     29    68  (ENE)           mstly clr   none
     06:01    27     8     29    59  (ENE)           mstly clr   none
     07:01    30    -7     24    47  (NE)            mstly clr   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