Date: Thu, 6 Mar 2008 04:31:38 -0700 (MST)
From: Jack Dembicky
Subject: 3.5m Night Log 20080305
                        Apache Point Observatory
                        3.5m Telescope Night Log
                       Wednesday, March 05, 2008
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)             INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 J.Dalcanton     J.Holtzman, S.Courteau  DIS           00:45  02:25
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 UW03/O     18:57  05:31   9.6   0    0    0   1.6   0    0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialists: J. Dembicky
 I was getting some strange artifacts on the stars in the NA2 guider
 (vertical streaks above/below the star, like it was saturating).  See
 guider images 25-31.  This was with a N R+ND2 filter in (the star was
 pretty bright in R and clear).  WIth a 10s exp the star wasn't saturating
 but I was still seeing the vertical lines.  Image 31 shows this with
 the Star is 199, 162 and the "ghost" streak can be seen in this exposure
 at 196, 101.
 We had a clearing around 00:30 and opened for about 2 hrs before clouds
 moved in on us again.
 I did an axis init at 11:20:28 and apparently the Rotator did not
 initialize correctly (maybe I didn't wait long enough???).  I was able to
 slew the telescope in alt/az but the rotator showed a stop switch in
 place yet.  I did see a warning about RotD=1.0 (not RotDTime, which was
 0.1).  The rot command came thru at 11:20:40, which maybe was too short
 of a time?  An axis stop and init cleared the problem.
 We gave up at 04:15, as clouds were covering us and the humidity was near
 the closure limit now.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
      (SAEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
 -----------------------------------------------------------------------
 00:46 DISSlit -276(-584) 20  77  -1.4  -0.1  -0.1  -0.4  -1.2  --  1.45
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    38     0     17   204  (SSW)   1569    cldy      none
     17:00    38     4     20   267    (W)   2199    cldy      none
     18:00    36     2     26   267    (W)   1841    cldy      none
     19:00    36     3     18   247  (WSW)   1851    cldy      none
     20:00    35     3     16   268    (W)   1711    cldy      none
     21:00    35     4     16   271    (W)   1449    cldy      none
     22:00    33     5     16   272    (W)   1534    cldy      none
     23:00    30     8     10   354    (N)   2334    cldy      none
     00:00    31     5      6   265    (W)   1675   mst. cldy  none
     01:00    29     6     11   259    (W)   1838   Pt. Cldy   none
     02:00    26    11     12   216   (SW)   1996   Mst. Cldy  none
     03:00    24    15      3   189    (S)   2052    cldy      none
     04:00    22    17      7   346  (NNW)   1855    cldy      Lt. Snow
     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 1.4.5