Date: Tue, 11 May 2010 05:57:54 -0600 (MDT)
Subject: 3.5m Night Log 20100510
From: "Jack Dembicky"
                        Apache Point Observatory
                        3.5m Telescope Night Log
                         Monday May 10, 2010
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 M.Sun          M.SUn                   SPIcam        19:40  01:00
 M.Huber        M.Huber, Z.Tsvetanov    Echelle       01:00  05:27
                W.Bhatti
  PROG        SCHEDULED      WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH    D    B    D    B    D    B    D    B
 ------------------------------------------------------------------
 UV04/R     20:00  01:10     0    0    0    0   5.2   0    0    0
 JH02/R     01:10  05:59     0    0    0    0   3.1  1.7   0    0
   note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Dembicky
Spicam temp at start of night 172.3K
Spicam temp at end of night 167.8K
Az motion error too large happened several times tonight during slews which halted the axis.
Usually a axis stop/init then a track slew command would fix it (if it failed the first time I
tried the opposite direction).  I didn't record all of the errors but below are a few.
04:33:29 - Az motion error too large
05:29:04 - Az motion error too large
06:05:48 -    "                 "
07:29:49 -    "                 "
07:31:27 -    "                 "
07:45:19 -    "                 "
and several more during the night.  Always during a slew, at the start, and not during tracking.
Almost every slew gave an error if we were on the target for very long.
                ------------- FAILURE 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
 -----------------------------------------------------------------------
 21:20 SPICAM    77(  472) -139  76  11.2 11.2 11.3 10.6 10.9   665/8  1.10
 21:21 NA2gdr   511(30511) -139  76  11.2 11.2 11.3 10.6 10.9   R  1.20
 01:10 ECHELLE  -121( -697) -74  36  10.0  9.9 10.2  9.6  9.9   ND2  1.20
 02:34 dis-slit   188(  247) -133  57   9.4  9.2  9.4  8.6  9.0   --  1.25
                 ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    56     3     29   239  (WSW)   2472    clear     none
     17:00    56     2     30   268    (W)   1921    clear     none
     18:00    56     5     23   246  (WSW)   2167    clear     none
     19:00    55     5     17   264    (W)   1952    clear     none
     20:00    51     7     18   266    (W)   1669    clear     none
     21:00    52     6      6   280    (W)   1634    clear     none
     22:00    52     6     11   257  (WSW)   1645    clear     none
     23:00    52     6     17   267    (W)   1683    clear     none
     00:00    51     6     18   262    (W)   1697    clear     none
     01:00    50     7     23   259    (W)   1850    clear     none
     02:00    49     7     20   258  (WSW)   1953    clear     none
     03:00    48     8     26   255  (WSW)   2064    clear     none
     04:00    48     8     19   262    (W)   2121    clear     none
     05:00    47     9     16   266    (W)   2035    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: 2.11.1
      Current TUI version: 1.7.2