From:
Subject: 3.5m Night Log 20090329
Date: Mon, 30 Mar 2009 12:58:22 +0000 (UTC)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                         Sunday, March 29, 2009
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT   START  FINISH
-------------------------------------------------------------------
 T.Murphy        R.McMillan              APOLLO       --:--  --:--
 R.Reyes         R.Reyes                 DIS          20:30  22:30
 S.Majewski      A.Sheffield,T.David     Echelle      02:30  06:30
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
----------------------------------------------------------------------
 UW17/O     19:30  20:30    0   0.3   0    0    0    0    0    0    0
 PU03/R     20:30  01:10   2.1  0.6   0    0    0   2.0   0    0    0
 UV06/O     01:10  06:00   1.3   0    0    0   3.5   0    0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 Az vel scale: was 575, measured 578, changed to 577
 Alt vel scale: was -606, measured -607, no change
 We struggled with clouds for much of the night.  APOLLO got on sky
 briefly but got no data between clouds, so I counted the time as
 lost to weather.  The Princeton observer got usable spectra on
 several objects before clouds became too thick.  I closed the dome
 due to rising winds.
 Pointing check at NA2: Tertpoint script failed, communications timed
 out on LTA7.  Hub communicating fine with gcam, so I ran na2tilt
 script.   Old tilts: -76, 915.  Recommended change: -98, 4.  New
 tilts: -175, 915.
 After 02:00 the clouds thinned and then cleared.  Wind was still
 near the limit, sometimes over, but I felt safe enough as long as
 the telescope was pointed away.  Seeing was moderate and somewhat
 variable.
 Pointing check at NA1: Tertpoint script took successful image, but
 star was off the FOV so script failed.  I ran echtilt script with
 estimated position.  Old tilts: 1025, 1230.  Recommended change: 15,
 -420.  New tilts: 1025, 800.
                       ------- 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
 ------------------------------------------------------------------------
 19:52 APOLLO     35(  892) -76  50   6.6  7.0  6.7  6.9  6.6       1.50
 02:41 ECHELLE  -170(-1132) 181  79   2.2  2.8  2.9  2.2  2.2   ND3 1.30
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    45     5     27   241  (WSW)   1647 mstly cldy   none
     17:00    46     3     20   218   (SW)   1588 mstly cldy   none
     18:00    45     4     17   241  (WSW)   1729 mstly cldy   none
     19:00    45     3     20   256  (WSW)   1507 mstly cldy   none
     20:00    44     3     14   267    (W)   1741  ptly cldy   none
     21:00    42     3     27   234   (SW)   1565  ptly cldy   none
     22:00    42     3     20   231   (SW)   1338  ptly cldy   none
     23:00    41     4     29   233   (SW)   1232 mstly cldy   none
     00:00    40     3     16   261    (W)   1188 mstly cldy   none
     01:00    38     4     28   238  (WSW)   1760 mstly cldy   none
     02:00    37     6     27   232   (SW)   1570  ptly cldy   none
     03:00    35     7     29   233   (SW)   1502  ptly cldy   none
     04:00    34     9     30   241  (WSW)   1656    clear     none
     05:00    33    11     17   252  (WSW)   1591    clear     none
     06:00    32    12     21   234   (SW)   1696    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