From: Russet McMillan
Subject: 3.5m Night Log 20000420
Date: Fri, 21 Apr 2000 06:19:44 -0600 (MDT)
                        Thursday, April 20, 2000
                        APACHE POINT OBSERVATORY
                              Observing Log
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)   INSTRUMENT       DATE    START  FINISH
--------------------------------------------------------------------
K.Krisciunas    K.Krisciunas  SPIcam          4/20     20:05   21:40
                                                       23:50   00:50
X.Fan           X.Fan         GRIM II         4/21     --:--   --:--
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
--------------------------------------------------------------------
UW02/R     20:34  01:00  1.1  2.3   0    0    0   1.0   -    0    0
PU01/R     01:00  05:30   -   4.5   -    0    -    0    -    -    0
(note: times listed include instrument change time)
                      -------- ACTIVITY LOG --------
1st Half Observing Specialist: Camron Hastings
	High, thick-ish clouds at start of night. Opened dome at 18:20 MDT.
Clouds allowed us to get flats, but not much else. DIMM could not
acquire star due to clouds. I noticed later that the search routine was
not working because DIMM could not speak to the telescope. I checked and
for some reason the connection was broken. I restarted DIMM software and
all was well, except for the clouds. I closed dome due to opaque clouds
at 21:40 MDT. We reopened at 23:50 to try and shoot through some cirrus.
2nd Half Observing Specialist: Russet McMillan
The clouds thinned just long enough to focus SPIcam and get a few
images of a bright target before closing in again.  The dome was
closed at 00:50 and never re-opened during second half.
                            OBSERVER COMMENTS
                                FOCUS LOG
                              April 20 2000
                                                  Wind
Time   Inst        Focus     Az  El   Temp*    Dir  MPH  filt   FWHM"
-----------------------------------------------------------------------
20:56  SPIcam   +000(????)  153  42  7.9/8.3   119   12   V     1.52"
00:05  SPIcam     70(456)            8.6/8.5   128   14   V     1.21
00:10  Guider    380                                            1.35
*First temp is air, second temp is telescope superstructure.
                                 WEATHER
                              April 10 2000
                           Wind  Wind
     Time   Temp F Dewp F  MPH   Direction    Dust      Sky      Precip.
     -------------------------------------------------------------------
     17:01    58    13     12   237  (WSW)    494    ptly cldy    none
     18:01    56    10      8   180  (S)      540    ptly cldy    none
     19:01    53     8      7   196  (SSW)    625    ptly cldy    none
     20:01    50     7     10   101  (E)      944    ptly cldy    none
     21:01    48     6     13    83  (E)      682    ptly cldy    none
     22:01    46    10     11    81  (E)      802    ptly cldy    none
     23:01    45    13     11    90  (E)      817    ptly cldy    none
     00:01    47    10     15   127  (SE)     887    ptly cldy    none
     01:01    50     6     15   140  (SE)     807    ptly cldy    none
     02:01    48     4     14   170  (S)     1071    ptly cldy    none
     03:01    51     6     10   187  (S)     1640    ptly cldy    none
     04:01    50     7     12   179  (S)     1276    ptly cldy    none
     05:01    48     7     12   151  (SSE)   1193    ptly cldy    none
     06:01    48     8     12   146  (SE)     983    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.  Current
     TCC version is 2.2.5.
                                   - Camron, Russet