Date: Fri, 1 Jun 2012 10:53:35 -0000 (UTC)
Subject: 3.5m Night Log 20120531
From: "Gabrelle Saurage"
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, May 31, 2012
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)           INSTRUMENT      START  FINISH
--------------------------------------------------------------------
J.Hughes          J.Hughes             SPIcam, echelle 20:15   21:15
C.Blake           C.Blake              echelle, DIS    03:00   04:45
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW15/R     20:15   01:10    0   3.9   0    0   0.0  1.0   0    0
PU01/R     01:10   05:47   0.3  2.0   0    0   2.0  0.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: G.Saurage
Thunderstorms in the area at sunset. Opened for an hour before 70% humidity with 5K
dust counts closed us. Humidity and dust stayed high until after 2 am.
Did not get on-sky with SPIcam, so the instrument block still needs to get done next
week during engineering. New ecam mask at least.
Dust spike just after 4 am closed us for the night. Since the mirror was exposed to
15K counts might need CO2 cleaning. Telescope parked at -90, 20 as per Bill's
request.
                    ------- 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
--------------------------------------------------------------------------
 02:07 ECHELLE    480( -699) 154  70  12.3 11.2 11.5 11.5 12.6     1.32
 02:42 dis-slit   518(  400) 169  82  14.7 11.5 12.1 11.8 12.8     1.22
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    64    28      1   102  (ESE)   5336 mstly cldy lt rain
     17:00    57    35      5    97    (E)   4217 mstly cldy   dust
     18:00    57    38     17    78  (ENE)   3746 mstly cldy   none
     19:00    56    42     18    71  (ENE)   3630 mstly cldy   none
     20:00    56    43     17    86    (E)   4183 mstly clr    none
     21:00    54    45     16    83    (E)   4823 mstly clr    dust
     22:00    54    46     14    86    (E)   5890 mstly clr    dust
     23:00    52    48     16    87    (E)   6735 mstly clr    dust
     00:00    51    48     13    88    (E)   6616 mstly clr    dust
     01:00    51    48     10    94    (E)   6418 mstly clr    dust
     02:00    57    36      1   208  (SSW)   5014 mstly clr    dust
     03:00    57    36      1   160  (SSE)   4266 mstly clr    dust
     04:00    58    30      4   198  (SSW)   3334 mstly clr    dust
     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: 1.9.5