From:
Subject: 3.5m Night Log 20110206
Date: Mon,  7 Feb 2011 13:36:35 +0000 (UTC)
                       Apache Point Observatory
                       3.5m Telescope Night Log
                       Sunday, February 06, 2011
                                                        ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
T.Murphy          R.McMillan            APOLLO         18:15   18:45
B.Woodgate        C.Grady,B.Woodgate    GFP,DIS        19:00   00:10
D.York            C.Grady,B.Woodgate    DIS            00:10   06:00
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
--------------------------------------------------------------------
DD02/R     17:49   18:49    0   0.5   0    0   0.0  0.5   0    0
DD01/R     18:49   00:10   0.5  1.5   0    0   2.4  0.9   0    0
UC05/R     00:10   06:45    0    0    0    0   6.6  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist:    R.McMillan
Clouds during first half caused considerable trouble for APOLLO, GFP, and
DIS.  They were rapidly moving and tended to thin, then re-thicken on
exactly the most inconvenient timescales.  Although the dome was open for
the entire night, I counted a few hours as lost to weather because of the
clouds.
The clouds cleared up before midnight and everything got much easier,
although pointing was generally over 2 arcseconds.  The DIS slitviewer
shutter continued to misbehave on about 30-50% of images.  There were an
unusual number of "fiducial error too large to correct" messages from
azimuth, requiring occasional reslews.
During afternoon checkout it appeared that the GFP vacuum was rather
soft, but since the instrument is about to go out of service we decided
to just fill it and finish off the night.  Mirror covers were working in
auto mode at the beginning of the night but needed to be in manual mode
by morning.
Echelle shield fills:
17:00 MST
07:00 MST
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 19:18 GFP   125( -746)  70  55  -7.1 -6.8 -6.8 -7.2 -7.2   R  1.30
 20:40 dis-slit   200( -956) -77  72  -7.3 -7.2 -7.0 -7.3 -7.4     1.80
 19:18 GFP   125( -746)  70  55  -7.1 -6.8 -6.8 -7.2 -7.2   R  1.30
 20:40 dis-slit   200( -956) -77  72  -7.3 -7.2 -7.0 -7.3 -7.4     1.80
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    21     1      2   234   (SW)    313  ptly cldy   none
     17:00    21     2      9   349    (N)    258  ptly cldy   none
     18:00    19     3      8   331  (NNW)    247 mstly cldy   none
     19:00    19     3     17   340  (NNW)    228 mstly cldy   none
     20:00    19     4      8   357    (N)    270 mstly cldy   none
     21:00    19     4     20     2    (N)    302 mstly cldy   none
     22:00    18     4      4    38   (NE)    300  ptly cldy   none
     23:00    17     4      7   315   (NW)    337  ptly cldy   none
     00:00    16     4     20   353    (N)    383    clear     none
     01:00    15     2      5    37   (NE)    345    clear     none
     02:00    15     2     19   348  (NNW)    357    clear     none
     03:00    14     1     23     1    (N)    198    clear     none
     04:00    15     1     18   355    (N)    320    clear     none
     05:00    15     3     12   350    (N)    313    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
    Telescope drives operational. Current TCC version: 2.14.0
    Current TUI version: 1.8.5