Subject: 3.5m Night Log 20050519
Date: Fri, 20 May 2005 06:51:59 -0600 (MDT)
From: bketzeba@apo.nmsu.edu (Bill Ketzeback)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                         Thursday, May 19, 2005
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 T.Harrison      T.Harrison             NicFps         20:20 05:45
  INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ----------------------------------------------------------------------
 NM09/R      20:59 05:00    0    0    0   0.3  1.1  6.6   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: B.Ketzeback
 Very nice photometric night. Seeing with nicfps was excellent (0.5 to 0.7
 arcseconds) all night. At the beginning of the night the observer noted
 that the sky levels seemed odd to him. This quickly led into an investigation
 of the nicfps filter wheel positions. With Craig Loomis' help I was able to
 determine that filter wheel 1 was indeed off by one position. This would have
 likely been true last night as well. After about 20 minutes I was able to
 recalibrate the wheel position. Another problem we discovered at the
 beginning of the night was that the version of TUI in the NMSU observing room
 was quite old, sending large uncomputed offsets to the telescope when running
 the dither script. This was causing some very unpleasant results as seen in
 the telemetry data of the Azimuth Axis Drives. A newer version of the dither
 script was ftp'ed to NMSU and loaded by the observer which corrected the
 problem. Observing went smoothly the rest of the night. This later problem
 did not result in any loss of time.
                      ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
      (SEGDFNVO)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
 NM09      N         I/H     21:00  21:20   Filter wheel misregistation
                ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 21:37 nicfps      50(2022)    205 76  17.1/18.6  313  7    J     0.74
 02:11 nicfps      100(1991)   34  68  17.1/16.4  299  2    Ks    0.65
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    72    29     11   269  (W)      827   clear     none
     17:01    73    29      9   263  (W)      636   clear     none
     18:01    69    27      4   290  (WNW)    510   clear     none
     19:01    70    28      8   266  (W)      418   clear     none
     20:01    63    25      7   291  (WNW)    343   clear     none
     21:01    63    24      6   309  (NW)     411   clear     none
     22:01    63    20      5   332  (NNW)    413   clear     none
     23:01    64    20      2   325  (NW)     302   clear     none
     00:01    63    20      3   338  (NNW)    345   clear     none
     01:01    64    20      0   233  (SW)     364   clear     none
     02:01    64    18      0   354  (N)      287   clear     none
     03:01    62    19      0   236  (SW)     291   clear     none
     04:01    62    21      0   195  (SSW)    328   clear     none
     05:01    62    21      0   297  (WNW)    316   clear     none
     06:01    62    22      0   244  (WSW)    330   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 Remark version: 2.85b
      Current TCC version: 2.7.2  Current TUI version: TUI 0.94