From: Russet McMillan
Subject: 3.5m Night Log 19991220
Date: Tue, 21 Dec 1999 06:18:03 -0700 (MST)
                         MONDAY DECEMBER 20, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Krisciunas    Krisciunas, Rest       GrIm2      12/20  17:59 18:59
Duncan            Rebull             Echelle 12/20-21  18:59 00:10
Brown             Brown              Echelle    12/21  00:10 04:40
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UW02/R     17:59 18:59    -    0    -   0.2   -   0.8   0    -    0
UC01/R     18:59 00:10    -   0.8   -    0    -   4.4   0    -    0
WS01/R     00:10 06:03   0.4  3.2   0   2.3   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: Loomis
The telescope was opened at 17:05 MST and closed at 21:15, due to
clouds.  It was reopened at 22:00 MST.  Kevin Krisciunas and Armin
Rest observed with GrIm2 for UW02.  UW02 lost some time due to a
problem with the dither script (see below).  Craig got this working
very quickly.
*The echelle shutter failed on the first two test images during
 afternoon checkout.  It worked on subsequent images, but needs to be
 checked out.
*The dither scripts used with GrIm2 don't work under the current
 version of tcl.  One script ~visitor1/gene/dither3.tcl has been
 revised to make it work.  A more general solution will be worked out
 for the rest of the scripts.
2nd half observing specialist: McMillan
The telescope was closed at 00:50 due to thick clouds and reopened at
01:45, then closed again from 03:25 to 04:10 due to high humidity.
The telescope was closed for the last time at 04:40, again due to
humidity, which remained high until it was too late to obtain any
useful data.
* After we had closed, we discovered that the echelle shutter had been
stuck closed since the beginning of first half, and none of the data
that had been obtained were useful.  The shutter remained stuck closed
on subsequent test images; it needs to be fixed immediately in order to
be usable tomorrow night.
                            OBSERVER COMMENTS
                                FOCUS LOG
                             DECEMBER 20 1999
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
17:40  GrIm2      0(598)    140  55 -6.7/-6.8   44   11   J     1.0
19:15  Echelle   33(-431)    95  52 -6.6/-6.8   40   16  ND3    1.4
04:15  Echelle   47(    )                                clear  1.6
#First temp is air, second temp is telescope.
                                 WEATHER
                             DECEMBER 20 1999
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    23    10     12   329  (NNW)    306    ptly cldy   none
     17:01    21    10      6   358  (N)      391     clear      none
     18:01    20     9     15    21  (NNE)    439     clear      none
     19:01    20     6     12    36  (NE)     265     clear      none
     20:01    20     6     16    57  (NE)     408     clear      none
     21:01    20     7     13    31  (NNE)   1527    mstly cldy  none
     22:01    20     6      3   359  (N)      630    ptly cldy   none
     23:01    18     8      3   261  (W)      359    ptly cldy   none
     00:01    18     9      5   211  (SSW)    580    ptly cldy   none
     01:01    18    11      0   306  (NW)     773    mstly cldy  none
     02:01    17     9      3   334  (NNW)    541    ptly cldy   none
     03:01    17    11      1   249  (WSW)   1135    mstly clr   none
     04:01    16    11      1   234  (SW)    1050     clear      none
     05:01    15    12      5   272  (W)     1571     clear      none
     06:01    17     9      6   275  (W)      708     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: 2.55b5.
Current guide software version: GIm Ctrlv3.0b27.
- Karen Loomis, Russet McMillan