From: Russet McMillan
Subject: 3.5m Night Log 991214
Date: Wed, 15 Dec 1999 06:29:24 -0700 (MST)
                         TUESDAY DECEMBER 14, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Staff         Deglman, Loomis   SPIcam/guider 12/14-15 17:56 06:00
                 McMillan
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
EN02/S     17:56 06:00   3.2  3.9   0    0   3.6  1.3   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, Deglman
The telescope was opened at 17:30 MST under thick cirrus.  We acquired
a star and obtained focus data for the guider and SPIcam, in order to
determine if the secondary mirror cage needed to be moved.
The telescope was closed at 19:15 MST, due to clouds.
Jon Davis came in and retensioned the vanes for the secondary mirror,
to move it farther away from the primary by about 3/16 inch.
The telescope remained closed, due to smoke from nearby controlled
burns being conducted by the forest service.
The telescope was reopened at 00:25.  The new focus position (for the
guider and SPIcam) was found to be near the center of travel of the
secondary mirror.
2nd half observing specialist: McMillan, Deglman
Once the new focus was established, we were able to find the secondary
collimation, which turned out to be at X and Y tilt values of -100,
+100.  After the secondary had been adjusted, it was necessary to
include some calibration offsets (0.02,-0.015) in order to re-center
the star.
We went on to do a successful instrument block for the guider,
preparatory to doing a pointing model.  Unfortunately, clouds started
to move in again around 02:30.  While they weren't thick enough to
prevent our measurements for the instrument block, they did make the
pointing model difficult enough that we decided to close again at
04:00.
                            OBSERVER COMMENTS
                                FOCUS LOG
                             DECEMBER 14 1999
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
18:40 guider  -3400(-3.5E6) 307  33 -5.9/-3.0   11   7   R+ND2  2.1
19:10 SPIcam  -3450(-3.4E6) 312  33 -6.7/-3.0   30  17    V     2.0
00:50 guider   +875(5.0E5)  178  34 -3.9/-5.6  207   4   R+ND2  1.2
01:20 SPIcam   +850(4.8E5)  185  34 -4.4/-5.4  198   5    V     1.2
#First temp is air, second temp is telescope.
                                 WEATHER
                             DECEMBER 14 1999
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    21   -21     13    34  (NE)     262     cirrus     none
     17:01    21   -22     20    27  (NNE)   1126     cirrus     none
     18:01    21   -23     19    31  (NNE)   2112   hvy cirrus   none
     19:01    21   -22      9     7  (N)      269    mstly cldy  none
     20:01    20   -22     14    15  (NNE)    305    mstly cldy  none
     21:01    20   -23      9   112  (ESE)  14365    mstly cldy  none
     22:01    20   -15      5   263  (W)     6024    ptly cldy   smoke
     23:01    21   -13     12    85  (E)     4079    ptly cldy   smoke
     00:01    26   -20      2   152  (SSE)    532    mstly clr   none
     01:01    25   -20      1   184  (S)      182     clear      none
     02:01    24   -20      1   137  (SE)     235    mstly clr   none
     03:01    25   -19      2   297  (WNW)    188    ptly cldy   none
     04:01    24   -19      7   349  (NNW)    169    ptly cldy   none
     05:01    24   -20     11   324  (NW)     180    ptly cldy   none
     06:01    22   -21      3   316  (NW)     210    ptly cldy   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