Date: Thu, 28 Sep 2006 05:19:28 -0600 (MDT)
From: Jack Dembicky
Subject: 3.5m Night Log 20060927
                         Apache Point Observatory
                         3.5m Telescope Night Log
                        Wednesday, September 27, 2006
                                                          ACTUAL
  ASTRONOMER     OBSERVER(S)              INSTRUMENT   START FINISH
 -------------------------------------------------------------------
 V.Debattista   V.Debattista              DIS          20:03  01:10
 A.Bender       A.Bender, N.Alpers        NICFPS       02:50  04:15
   INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS    DAY  NOT USED
  I/ROW/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
  UW06/R      19:46  01:10   0    0    0    0   3.4  2.0   0    0    0
  CU03/R      01:10  06:02  3.5   0    0    0   1.4   0    0    0    0
    note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
   1st Half Observing Specialist: G.Saurage
 Thin clouds patchy all over at sunset. They persisted most of 1st half
 making long integrations on a galaxy frustrating,
 but at least we were open. Seeing was poor to moderate all night.
  2nd Half Observing Specialist: J.Dembicky
 Switched over to NICFPS at 01:10, clouds started getting thicker and by
 01:25 (when I was trying to focus) the clouds were too thick for the
 observers first object.  They slewed to an object more overhead (and in
 less clouds) and we focused there.
 They messed with the cloudcam today and the image displayed was pretty
 much worthless tonight.  "Looked" like patchy clouds when we had
 completely overcast sky.
 Clouds became a little more patchy around 02:50 and the observer was able
 to start to see stars in her fields.  She noted a gradient pattern in the
 subtracted images with FS=0 (Stephane had mentioned a problem with FS=1
 but not with FS=0).  She wasn't sure but it probably should be checked
 out.  She noticed it in her 88 and 89 subtracted images (CU03).
 at 05:00 we saw lightning to our N and that pretty much made my decision
 for me to close for the remainder of the night.
 The Echelle LN2 tank was sitting at 9 PSI this morning, about 1/2 full.
                       ------- 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
  -----------------------------------------------------------------------
  20:19 DISslit     -300(14)  80  48  12.9/15.3 12.1 13.0         -  1.3
  23:15 DISslit    -175(-68) 118  85  12.4/12.8 11.8 12.5         -  1.1
  01:42 NICFPS      -25(549) -37  71  12.8/12.5 11.9 12.7 12.6   Ks  0.85
  03:06 NICFPS     -25(553)           12.4/12.2 11.7 12.3 12.2   Ks  0.8
                 ------------- WEATHER LOG ----------------
                                    Wind                     Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    60    28     10   287  (WNW)    189  mstly clr   none
     17:00    62    32     17   270    (W)    266  ptly cldy   none
     18:00    61    35      9   267    (W)    289  ptly cldy   none
     19:00    57    33      9   269    (W)    293  ptly cldy   none
     20:00    57    34      8   262    (W)    364  ptly cldy   none
     21:00    55    35      9   196  (SSW)    396  ptly cldy   none
     22:00    55    37      9   190    (S)    525  mstly clr   none
     23:00    55    35      3   147  (SSE)    438  ptly cldy   none
     00:00    55    34      5   104  (ESE)    431  ptly cldy   none
     01:00    57    31      1    83    (E)    463  Mst. Cldy   none
     02:00    55    32      6     5    (N)    448  Mst. Cldy   none
     03:00    55    32     14    33  (NNE)    502   Pt. Cldy   none
     04:00    54    32     16    68  (ENE)    380  Mst. Cldy   none
     05:00    53    32     15    76  (ENE)    360  Mst. 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
       Telescope drives operational. Current TCC version: 2.8.4
       Current TUI version: TUI 1.2