From:
Subject: 3.5m Night Log 20090322
Date: Mon, 23 Mar 2009 13:22:57 +0000 (UTC)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                         Sunday, March 22, 2009
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 R.Reyes        R.Reyes,M.Strauss,       DIS          19:30  22:45
                Y.Shen,X.Liu,G.Ariano                 02:30  06:15
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 PU03/O     20:10  06:09   3.7   0    0    0   5.4  0.9   0    0    0
  note: scheduled times listed include instrument chanyes, some ge time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 Skies were clear all night, but seeing was poor.  We closed for a
 few hours due to high winds.  The tower dust counter was not working
 properly; the dome dust counter reported that levels were elevated
 but acceptable when we re-opened.
 I managed to clear up a few minor mysteries tonight, with help from
 Bill Ketzeback.  We found that weather information had not been
 getting to the TCC, causing the strange focus behavior over the past
 couple of weeks.  I confirmed that the echelle headers are written
 correctly based on lamp state, except on occasions when a separate
 problem prevents the lamp state from being reported correctly.  And
 a brighter-than-background bar at the edge of spicam subframes was
 found to be not a problem.
                ------------- ACTIVITY LOG --------------
  PROG   INST   FAILURE MODE     TIME
      (STEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt FWHM
 -----------------------------------------------------------------------
 02:50 dis-slit  -150( -285)  76  70   3.9  5.4  5.7  4.7  4.2   - 2.30
 04:00 dis-slit   -89( -288) 123  69   3.4  4.1  4.3  3.4  3.4   - 2.80
                 ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    51    22     15   261    (W)      0    clear     none
     17:00    52    24     22   238  (WSW)      1    clear     none
     18:00    53    21     20   262    (W)      6    clear     none
     19:00    50    17     26   225   (SW)      0    clear     none
     20:00    48    17     19   244  (WSW)      2    clear     none
     21:00    46    19     18   214   (SW)      0    clear     none
     22:00    45    18     26   193  (SSW)      4    clear     none
     23:00    45    15     35   207  (SSW)     21    clear     none
     00:00    44    13     30   204  (SSW)     13    clear     none
     01:00    42    14     26   210  (SSW)     17    clear     none
     02:00    40    15     31   220   (SW)     24    clear     none
     03:00    39    14     33   210  (SSW)    187    clear     none
     04:00    38    13     21   196  (SSW)    233    clear     none
     05:00    38    12     20   202  (SSW)    175    clear     none
     06:00    37    12     28   234   (SW)    601    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: 2.10.0
      Current TUI version: TUI 1.5.1