Subject: 3.5m Night Log 20191126
From: trudyk@apo.nmsu.edu
Date: Wed, 27 Nov 2019 13:12:05 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, November 26, 2019
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW051 S.Anderson        J.Ruan,S.Anderson
FG01  D.Buzasi          D.Buzasi
JH08  R.Vervack         R.Vervack
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW05  DIS            17:06   23:43
FG01  ECHELLE        23:58   01:30
JH08  DIS            --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW05/R      17:06  00:10    0    0    0    0   6.8  0.3   0    0
FG01/R      00:10  05:20    3.7  0    0    0   1.5  0.0   0    0
JH08/R      05:20  06:35    1.2  0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
High winds during checkout so only the rotator and alt axes were tested. Winds and dust began to die down around 16:00. Seeing wasn't that good. Some clouds came in around 22:40. Clouds continued to build up until we were overcast by 01:30. Humidity began to spike about then as well, and passed safety limits, so we closed. Humidiy stayed high and went to fog. We did not open again.
                    ------- FAILURE LOG -------
              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 17:34 dcamera    258(  -48)  11  57  -3.4 -1.7 -0.8 -2.3 -3.0   -  1.74
 18:49 dcamera    365(  -24) -12  58  -3.6 -3.4 -2.5 -3.6 -3.7   -  1.95
 20:32 dcamera    462(   94) -97  52  -1.9 -2.5 -2.6 -2.9 -2.1   -  1.80
 00:02 ecamera    406( -797) 132  67  -1.1 -1.1 -0.9 -1.1 -1.0   ND4  1.26
          ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    30     9     23   272    (W)   3557  ptly cldy   none
     17:00    26     6     16   268    (W)   3874 mstly clr    none
     18:00    25     5     14   237  (WSW)   2045 mstly clr    none
     19:00    26     4      6   255  (WSW)   1512 mstly clr    none
     20:00    27     3     15   265    (W)   1169    clear     none
     21:00    30   -11     16   257  (WSW)    497    clear     none
     22:00    30    13     11   264    (W)    574  ptly cldy   none
     23:00    30    19     12   266    (W)    622  ptly cldy   none
     00:00    30    23     26   249  (WSW)    559  ptly cldy   none
     01:00    31    26     18   264    (W)          cloudy    humid
     02:00    31    28     15   248  (WSW)          cloudy    humid
     03:00    31    29     14   236   (SW)    463   cloudy    humid
     04:00    31    29     16   217   (SW)          cloudy    humid
     05:00    31    30     16   212  (SSW)    297   cloudy     fog
     06:00    32    31     18   205  (SSW)          cloudy    humid
     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.
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