From: Russet McMillan
Subject: 3.5m Night Log 20071214
Date: Sat, 15 Dec 2007 04:31:48 -0700 (MST)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Friday, December 14, 2007
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
 ------------------------------------------------------------------
 T.Murphy       R.McMillan              APOLLO         --:--  --:--
 K.Lee          K.Lee                   DIS            --:--  --:--
 J.Greene       J.Greene                --             --:--  --:--
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UW15/O     17:07  18:07    0   0.2   0    0    0    0    0    0    0
 PU05/R     18:07  00:05   2.3  3.7   0    0    0    0    0    0    0
 PU01/R     00:05  06:00   5.9   0    0    0    0    0    0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialists:  R.McMillan, J.Coughlin
 The night started with high winds, quickly joined by heavy clouds,
 high humidity, and then snow.  We got about two inches of snow at
 the site, most of it light powder but some slushy stuff at the
 bottom.  I'm not sure whether it will all get off the dome without
 assistance.  We ran the snow program (mostly after the snow fell
 since we weren't expecting that much -- but wind was still strong
 while it was running).  Roof heaters were not turned on since air
 temps were well below freezing.  Telescope will be left parked
 facing south.
 The tcc was complaining about not being able to talk to the gmech
 (LTA6).  We tried several fixes without luck, then Jeff suggested
 power cycling the gmech controller -- we unplugged and replugged all
 the stuff on that box, and it came back up happy.
 Around 1ish, the DIS blue ion pump spiked up to around 250.  It came
 down slowly but steadily for the next few hours.  Temperature did
 not warm significantly.  It's probably okay but will bear some
 watching.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVPA)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt FWHM
 -----------------------------------------------------------------
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    26    14     23   263    (W)    592  ptly cldy   none
     17:00    23    14     34   259    (W)    517 mstly clr    none
     18:00    20    15     30   288  (WNW)    605   cloudy     none
     19:00    16    15     12   332  (NNW)   6297   cloudy    humid
     20:00    14    13     11    10    (N)   1159   cloudy   lt snow
     21:00    13    12     20   316   (NW)   1031   cloudy     snow
     22:00    13    11     18   354    (N)    362   cloudy     snow
     23:00    12     9     12   333  (NNW)    418   cloudy     none
     00:00    11     8     19   328  (NNW)    464   cloudy     none
     01:00    10     6     13   351    (N)    626   cloudy     none
     02:00     8     4     14   356    (N)    528   cloudy     none
     03:00     7     4     24    19  (NNE)    760   cloudy     none
     04:00     7     4      6   294  (WNW)    505   cloudy     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: 2.9.1
      Current TUI version: TUI 1.4.3