Date: Thu, 13 Jun 2013 11:48:42 -0000 (UTC)
Subject: 3.5m Night Log 20130612
From: mcmillan@apo.nmsu.edu
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, June 12, 2013
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
H.Weaver          H.Weaver,C.Lisse,     SPICAM         20:40   01:04
                   Y.Fernandez
P.Gaulme          J.McKeever            Echelle        01:08   05:15
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
JH02/R     20:21   01:10    0   0.8   0    0   2.1  1.9   0    0
NM03/R     01:10   05:46    0    0    0    0   4.6  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Stop me if you've heard this one before: storms in the afternoon, clouds
and nearby rain around sunset, but we were able to open in twilight
although clouds did pose some problems.  In this case the observers were
hoping to work even in bright twilight, so the weather did prevent some
planned science.
When I changed to Echelle at 07:06 UT, I noticed that the PMSS A, B, and T
cells were oscillating at quite a high frequency.  This was with the
telescope at altitude 80, not tracking the sky, facing due west, with 20
mph wind from the east.  When I moved the telescope down to a lower
altitude after rotating the tertiary, the oscillations stopped.  I asked
the observers to warn me if they would be going to high altitudes, and a
few times they did get into the range 75-80 degrees, but I didn't see the
oscillations again.
Otherwise everything went pretty smoothly.
                    ------- 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
--------------------------------------------------------------------------
 20:42 SPICAM   390(  824) 326  51  17.9 19.0 19.4 18.9 17.8   R  0.93
 00:19 ECHELLE   504( -355) 129  63  18.2 17.4 17.8 17.6 17.8   ND2  1.08
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    73    39      2   210  (SSW)    933 mstly cldy   none
     17:00    71    33     12    30  (NNE)   1188 mstly cldy   none
     18:00    71    33     11    75  (ENE)   1246  ptly cldy   none
     19:00    70    36     10    87    (E)   1269  ptly cldy   none
     20:00    68    40      6   114  (ESE)   1517  ptly cldy   none
     21:00    65    39     19    76  (ENE)   1731 mstly clr    none
     22:00    64    39     16    80    (E)   1739 mstly clr    none
     23:00    63    38     18    87    (E)   1701 mstly clr    none
     00:00    64    34     23    80    (E)   1476    clear     none
     01:00    65    26     17    83    (E)    965  ptly cldy   none
     02:00    64    25      1   201  (SSW)    747  ptly cldy   none
     03:00    63    28     13    80    (E)   1164 mstly clr    none
     04:00    63    23     18    78  (ENE)    915 mstly clr    none
     05:00    63    23     21    78  (ENE)    747    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: 2.15.0
    Current TUI version: 2.0.0