Subject: 3.5m Night Log 20160821
From: cgray@apo.nmsu.edu
Date: Mon, 22 Aug 2016 10:13:11 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, August 21, 2016
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
Y.Notsu           Y.Notsu, D.Nogami     ECHELLE        21:18   01:06
E.Glikman         E.Glikman             TSpec          --:--   --:--
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW03/R     19:49   01:10   1.5   0    0    0   0.7  3.1   0    0
NA02/R     01:10   06:23    0   5.2   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
If I may abuse the cap locks for a moment...I CAN'T BELIEVE WE OPENED!!!
We flew with Mav-style observing tonight: Danger Zone.
The sky was raining and cloudy all day but cleared up an hour before sunset.  There was very high high humidity after sunset but, as soon as it dropped to safe levels, we went on sky and found good seeing!  It was cloudy and humidity was almost always at the border line, but we were able to punch through it for most of the A half.  However, humidity went up to 90% at the B half transition and we remained closed the rest of the night. There was no chance of reopening as rain and fog rolled it at 4am and NA02 needed at least one hour on clear sky.
NICFPS did not fill properly yesterday morning (we suspect an ice plug due to the humidity) which resulted in the instrument warming to ~102.  Slower fills seem to have solved the problem.
                    ------- 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
--------------------------------------------------------------------------
 19:36 ecamera    743(  -20) 131  61  12.8 15.4 15.1 15.2 15.0   clear  1.04
 21:39 ecamera    740(  -80) 177  77  10.9 14.5 14.0 14.2 13.9   clear  1.10
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    60    52      6   208  (SSW)        mstly cldy   none
     17:00    57    51      9   240  (WSW)         ptly cldy   none
     18:00    61    51      4   239  (WSW)         ptly cldy   none
     19:00    57    52      4   203  (SSW)        mstly clr   humid
     20:00    52    50      8    94    (E)           clear    humid
     21:00    50    49      7    94    (E)        mstly clr    none
     22:00    53    43      6   184    (S)        mstly clr    none
     23:00    52    42      7   162  (SSE)         ptly cldy   none
     00:00    52    43      8   181    (S)          cloudy     none
     01:00    50    45     14   159  (SSE)          cloudy    humid
     02:00    50    47     16   155  (SSE)          cloudy    humid
     03:00    50    49      8   190    (S)          cloudy     rain
     04:00    50    50      9   183    (S)          cloudy     rain
     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