Date: Mon, 23 Apr 2007 10:50:27 -0000 (UTC)
Subject: 3.5m Night Log 20070422
From: "Gabrelle Saurage"
                         Apache Point Observatory
                         3.5m Telescope Night Log
                         Sunday, April 22, 2007
                                                           ACTUAL
  ASTRONOMER      OBSERVER(S)          INSTRUMENT        START  FINISH
  -------------------------------------------------------------------
  J.Hughes        J.Hughes             SPIcam            21:27  02:20
   INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
  I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
  UW04/R     20:35  05:28   4.0   0    0    0   0.6  4.3   0    0    0
   note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
Observing Specialist: G.Saurage
Clouds kept us closed for a while at the beginning of the night. The delay
made the first hour of scheduled engineering time impractical. So, we just
moved on to science. We opened although we were battling clouds all night.
Data collection was poor at best.
Closed at 2:20am after fighting an overcast sky for a few hours.
Conditions only worsened after that. Satellite showed a large mass of
thick clouds coming up from Mexico. Called it a night at 5am.
                       ------- 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
 -----------------------------------------------------------------
21:45 SPIcam     -15(221) -22  55  7.6  7.6  6.5   7.2  7.5   R   1.0
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
    16:00    50    11     12   232   (SW)    913  ptly cldy   none
     17:00    48    11     14   209  (SSW)    943 mstly cldy   none
     18:00    49    15     17   225   (SW)    999 mstly cldy   none
     19:00    46    16     12   187    (S)    948   cloudy     none
     20:00    43    15     12   208  (SSW)    951 mstly cldy   none
     21:00    46    10     20   209  (SSW)   1038 mstly cldy   none
     22:00    45    11     20   217   (SW)   1088  ptly cldy   none
     23:00    44    12     20   231   (SW)   1183  ptly cldy   none
     00:00    45    14     20   218   (SW)   1277  ptly cldy   none
     01:00    45    14     23   217   (SW)   1470  ptly cldy   none
     02:00    44    14     19   248  (WSW)   1405   cloudy     none
     03:00    44    13     21   238  (WSW)   1007   cloudy     none
     04:00    42    14     16   245  (WSW)   1169   cloudy     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: 2.9.0
      Current TUI version: TUI 1.3