Date: Thu, 31 May 2001 05:32:39 -0600 (MDT)
From: Jack Dembicky
Subject: 3.5m Night Log 20010530
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                        Wednesday, May 30th, 2001
                                                          ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 -------------------------------------------------------------------
 G.Miknaitis   G.Miknaitis, C.Stubbs   SPIcam          20:16   22:10
               J.Strasburg
 D.York        S.Friedman,             Echelle         02:50   03:20
               P.Sonnentrucker
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UW10/R      21:08 01:00    0   2.0   0    0    0   1.9   0    0    0
 UC04/R      01:00 04:54   1.6  1.7   0    0   0.5   0    0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: Jack Dembicky
We had some clouds in the W/NW part of the sky at sunset tonight.  I
opened the louvers and turned on the cooling fans around 18:50
tonight.  The enclosure was opened around 19:45 for cooling after a last
minute filter change request by the observer.  No time was lost and the
observer was on the sky taking sky flats by 20:16.
Clouds moved in around 22:10 and pretty much shut down observing.  The
winds picked up to 35-40 MPH at 00:45 and started blowing out of the East.
We opened up again at 02:10 and I tried focusing the Echelle.  The
seeing was so bad that the efocus routine could not even find the star.  I
manually did the focus and found that the seeing was horrible at 4.0+ arc
sec, focus=-100  (That was the best focus I could get manually.  The FWHM
was some of the worst I have seem). Probably not suprising the poor
seeing with the front that moved thru a couple hours ago and brought all
the wind, a drastic temperature drop, and we had the telescope pointed
over a small disturbance to the S.
At 03:20 the humidity skyrocketed from 54% to 89% and forced us to
again close.  The humidity dropped just before twilight but too late to
get anymore useful data.
         --------------- INSTRUMENT FOCUS LOG ----------------
                                       Air/Truss   Wind
 Time   Instrument   Focus     Az El    Temp-C    Dir MPH  filt   FWHM"
 ----------------------------------------------------------------------
 21:15  SPICam   -100(1319)   221 69    16.4/18.6 351  13   r'    1.13
 21:35  NA2gdr   3482(63482)  208 84    15.4/17.9  28  21  none   1.58
 03:50  Echelle  -100         188 32    8.6/10.1   68  14  nd1    4.38
              ------------- WEATHER CONDITIONS ------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     17:01    73    18     11   241  (WSW)    680   Pt. Cldy   none
     18:01    72    15     13   269  (W)      782   Pt. Cldy   none
     19:01    70    15      4   255  (WSW)    851   Pt. Cldy   none
     20:01    64    13      6   283  (WNW)    841   Pt. Cldy   none
     21:01    62    19     16    13  (NNE)    936   Pt. Cldy   none
     22:01    60    22     22    11  (N)      918    Cloudy    none
     23:01    60    22     10    14  (NNE)    889    Cloudy    none
     00:01    60    21      7     2  (N)      882    Cloudy    none
     01:01    49    31     19    80  (E)     1281    Cloudy    none
     02:01    47    31     21    71  (ENE)   1917   Pt. Cldy   none
     03:01    47    31     25    76  (ENE)   1841   Pt. Cldy   none
     04:01    46    42     17    66  (ENE)   2051   Pt. Cldy   none
     05:01    50    38      7    81  (E)     2521   Pt. 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
  > 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: 2.5.2
  Current MC version: v1_7_3.