Date: Thu, 17 May 2001 06:49:36 -0600 (MDT)
From: Jack Dembicky
Subject: 3.5m Night Log 20010516
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                        Wednesday, May 16th, 2001
                                                          ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 --------------------------------------------------------------------
 M.Strauss     X.Fan, V.Narayanan      DIS-Low         19:41  04:33
 E.Turner      J. Dembicky             SPIcam          04:33  05:50
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 PU02/R      20:56 04:33    0    0    0    0   6.2 1.4    0    0    0
 PU05/O      04:33 05:03    0    0    0    0    0  0.5    0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: Jack Dembicky
 I started cooling fans at 18:30 tonight.  Everything went smoothly with
 checkout and I let the observers use the instrument for their cals at
 19:40.  I opened the enclosure at 20:20 and proceded to focus the
 instrument as soon as it was dark enough.  Seeing was just below 1 arc
 sec. I had them on their first target by 20:40.
 The seeing was fairly good between slightly less than 1 arc sec to
 about 1.5 arc sec up to about 23:30 when we moved to the NW part of the
 sky and the seeing was very variable between 1.2 and 2.4 arc sec using
 the guider.  I tweeked the focus during the night to keep things in
 check, but this definately seemed to be seeing related.  SDSS observers
 reported similiar observations as well with regard to the seeing.
 Switch over to SPIcam at 02:54 and had them back on the sky at 03:10.
 I started the 2237 quasar lens observing program at 04:33 with seeing
 variable between 1.5 to 0.95 arc sec between the exposures.  I was able
 to get several images of the galaxy as well as rflats, but I was too
 late to get gflats.
         --------------- INSTRUMENT FOCUS LOG ----------------
                                       Air/Truss   Wind
 Time   Instrument   Focus     Az El    Temp-C    Dir MPH  filt   FWHM"
 ----------------------------------------------------------------------
 20:27  DISslit    -60(1266) -124 43   14.8/17.2  250   7   none  0.99
 20:35  NA2gdr   -302(56747) -123 42   15.0/17.0  250   7   red   0.84
 01:44  DISslit    -30(1075) -156 59   13.4/13.4  316  14   none  1.17
 03:20  SPIcam      50(1265)  -39 64   13.9/13.4  358   7    z    0.84
              ------------- WEATHER CONDITIONS ------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    65    24     10   263  (W)      814    Clear      none
     17:01    65    23     14   246  (WSW)    784    Clear      none
     18:01    63    21      0   249  (WSW)    680    Clear      none
     19:01    63    22     11   269  (W)      720    Clear      none
     20:01    57    24      4   273  (W)      868    Clear      none
     21:01    59    21      8   229  (SW)     923    Clear      none
     22:01    59    21      9   222  (SW)     843    Clear      none
     23:01    57    18     10   224  (SW)    1054    Clear      none
     00:01    57    19      7   266  (W)     1034    Clear      none
     01:01    56    20      6   275  (W)     1204    Clear      none
     02:01    56    22      7   320  (NW)    1094    Clear      none
     03:01    57    24      8   352  (N)     1100    Clear      none
     04:01    58    23     11    18  (NNE)    937    Clear      none
     05:01    56    23      7   357  (N)      999    Clear      none
     06:01    56    23     13     7  (N)      987    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 Ctrlv3.0b27. Current TCC version: 2.5.1
  Current MC version: v1_7_3.