Subject: 3.5m Night Log 20200316
From: trudyk@apo.nmsu.edu
Date: Tue, 17 Mar 2020 12:36:42 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, March 16, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS01  D.Michael         M.Crenshaw
OU05  S.Bhatiani        S.Bhatiani
AP01  T.Murphy          R.McMillan
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS01  ARCTIC         19:21   01:08
OU05  NICFPS         01:17   02:18
AP01  APOLLO         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS01/R      19:21  01:10    0    0    0    0   5.8  0.0   0    0
OU05/R      01:10  06:02    0.9  3.0  0    0   1.0  3.0   0    0
AP01/R      06:02  07:02    0    1.0  0    0   0.0  1.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Skies were mostly clear, but with high thin haze. Seeing varied through the night, but grew good after midnight. Shortly after 2 clouds came in. Radar showed a lot of rain in those clouds, so we closed. Rain receeded on radar around 04:45 but the skies continued to be overcast.  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
--------------------------------------------------------------------------
 19:40 arctic   773( 1151)  28  52   7.4  9.0  9.1  8.6  7.7   CU_H-alpha  1.15
 21:11 arctic   781( 1090) 191  50   7.8  7.5  8.6  7.0  7.3   JC_I  2.22
 01:31 NICFPS     515( 1289) 212  55   7.5  6.8  8.0  6.8  7.0   MK-H  0.75
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    52    25     12   244  (WSW)    180    clear     none
     17:00    51    21     18   215   (SW)    238    clear     none
     18:00    49    23     18   209  (SSW)    317    clear     none
     19:00    45    22     19   211  (SSW)    458 mstly clr    none
     20:00    45    20     15   202  (SSW)    436 mstly clr    none
     21:00    46    14     13   221   (SW)    268 mstly clr    none
     22:00    47    12     14   225   (SW)    154 mstly clr    none
     23:00    47    12     19   213  (SSW)    194 mstly clr    none
     00:00    46    15     17   208  (SSW)    236 mstly clr    none
     01:00    46    15     14   203  (SSW)    231 mstly clr    none
     02:00    45    15     20   209  (SSW)    299  ptly cldy   none
     03:00    45    20     17   201  (SSW)    352 mstly cldy   none
     04:00    44    22     18   199  (SSW)    267   cloudy     none
     05:00    43    27     19   194  (SSW)    264   cloudy     none
     06:00    44    21     16   192  (SSW)    223   cloudy     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.
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