From: Russet McMillan
Subject: 3.5m Night Log 20010904
Date: Wed,  5 Sep 2001 06:22:52 -0600 (MDT)
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                      Tuesday, September 4th, 2001
                                                          ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 -------------------------------------------------------------------
 D.York      D.York                    Echelle         21:10  22:00
                                                       22:45  01:05
 M.Strauss   X.Fan,V.Narayanan         GRiM            01:07  05:55
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UC06/R      20:18  01:00  0.5  1.0   0    0    0   3.2   0    0    0
 PU02/R      01:00  05:46   0    0    0    0    0   4.8   0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan, J. Barentine (1st half)
 Threatening weather and thick clouds nearby at sunset kept us closed
 for a while, then the humidity reached the limit soon after we
 opened.  The telescope was still warm, but the humidity continued to
 rise until we had to close -- then it dropped.  We reopened again
 soon after.  Skies remained clear and the seeing improved somewhat as
 the night progressed.  We had further opportunity to test the
 echelle's autoguiding capabilities, and it appears that the newest
 version of Remark is nearly ready for general use.
 GRIM's seeing advantage was very apparent during second half; it was
 getting subarcsecond seeing while the guider (running intermittently)
 showed worse than 1.5 arcsec.  All went smoothly during the GRIM
 observations.
              ---------------- FOCUS LOG ---------------
                                       Air/Truss   Wind
 Time   Instrument   Focus     Az El    Temp-C    Dir MPH  filt   FWHM"
 ----------------------------------------------------------------------
 21:30  Echelle   -600(-273)* 184 49  9.8/13.4   76   21   ND2   2.1
 22:56  Echelle     50(-57)   230 44  9.9/11.3   66   16   ND1   1.71
 01:16  GrIm2(f/10) 25(877)   237 40  10.1/10.1  67   20   J     0.87
 01:41  NA2gdr      0(59000)  233 42  10.4/10.2  59   14   R     1.6
* Zeropoint focus for this instrument was changed after measurement.
             --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     18:01    58    42     23    54  (NE)     483  ptly cldy   none
     19:01    56    43     24    62  (ENE)    362  ptly cldy   none
     20:01    55    43     19    71  (ENE)    282  mstly cldy  none
     21:01    51    46     25    70  (ENE)    340  mstly clr   none
     22:01    49    46     18    78  (ENE)    321  mstly clr   none
     23:01    50    44     15    72  (ENE)    267    clear     none
     00:01    50    44     17    70  (ENE)    267    clear     none
     01:01    50    44     16    64  (ENE)    310    clear     none
     02:01    51    43     18    65  (ENE)    356    clear     none
     03:01    52    41     17    53  (NE)     254    clear     none
     04:01    52    37     12    38  (NE)     260    clear     none
     05:01    53    35     17    28  (NNE)    315    clear     none
     06:01    54    36      8     4  (N)      330    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
  > 1u per 0.1 cubic feet.
                              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: 2.62. Current
  guide software version: GIm Ctrlv4.1b2. Current TCC version: 2.5.5
  Current MC version: v1_7_3.