Subject: 3.5m Night Log 20161011
From: cgray@apo.nmsu.edu
Date: Wed, 12 Oct 2016 13:23:52 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, October 11, 2016
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
Y.Notsu           Y.Notsu               ECHELLE        18:43   00:06
M.Hammergren      K.Nault, M.Brucker    DIS            00:11   02:10
M.Hammergren      K.Nault, M.Brucker    DIS            02:10   06:15
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW06/R     18:43   00:10    0    0    0    0   0.0  5.5   0    0
AD02/R     00:10   02:10    0    0    0    0   0.0  2.0   0    0
AD01/R     02:10   06:57    0    0    0    0   3.8  1.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night was simply gorgeous!  No clouds, humidity, dust, or wind!  We had good seeing all night and there wasn't a single problem.  In fact, we may be on our way to solving the Tspec problem.
After we left Tspec rotated upside down with the Aux tank plug removed yesterday, the Aux temp dropped and good images were taken.  I rotated it right side up during afternoon fills and noticed the temperature start to slowly increase.  I then inverted the instrument but left the Aux plug in and saw the temperatures start to decrease and level out to ~80.5K.  I took the plug out during dawn fills at 06:30 to see if the temperature would come down further but not enough time has elapsed to establish if there is any additional improvement.
                    ------- 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
--------------------------------------------------------------------------
 17:55 ecamera    894(   90)  62  71  13.5 14.7 14.5 14.5 14.2   --  1.00
 20:22 ecamera    779( -117) 241  68  13.4 12.8 13.3 12.7 12.8   --  0.85
 23:16 dcamera    684(  828) 336  56  12.8 12.5 13.1 12.6 12.7   --  1.00
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    63    44     19   223   (SW)    707    clear     none
     17:00    62    41     15   232   (SW)    676    clear     none
     18:00    60    41     20   236   (SW)    667    clear     none
     19:00    56    38     14   230   (SW)    684    clear     none
     20:00    56    36     17   221   (SW)    710    clear     none
     21:00    56    35     13   223   (SW)    733    clear     none
     22:00    56    35     16   229   (SW)    746    clear     none
     23:00    55    33     11   253  (WSW)    771    clear     none
     00:00    55    33     11   282  (WNW)    711    clear     none
     01:00    55    33     14   282  (WNW)    574    clear     none
     02:00    55    31     11   300  (WNW)    598    clear     none
     03:00    55    30     15   300  (WNW)    521    clear     none
     04:00    55    28     13   279    (W)    439    clear     none
     05:00    54    28     19   295  (WNW)    448    clear     none
     06:00    53    28     15   292  (WNW)    480    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: 1.2.2
    Current TUI version: 2.5.1