Subject: 3.5m Night Log 20190819
From: cgray@apo.nmsu.edu
Date: Tue, 20 Aug 2019 13:04:44 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, August 19, 2019
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
G.Wallerstein     E.M.Farrell           DIS            --:--   --:--
S.Bhatiani        S.Bhatiani, B.Bonine  NICFPS         03:09   05:47
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW10/R     19:53   01:10   2.4  2.9   0    0    0    0    0    0
OU04/R     01:10   06:21    0   2.4   0    0   0.0  2.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Arctic pump afternoon = 4.32e-6
arctic pump morning = 1.68e-6
They say that all good stories end where they begin.  In this case, it was on a dark and stormy night. We started with cloudy skies and virga which finally touched ground around 9pm. We had a light rain for a few hours and I thought things were starting to turn around near 3am.  We were able to open, though the clouds still hovered about. But seeing was pretty darn good! However, around 4:30, things started taking a nose dive.  I stayed open as long as possible in an attempt to let our user collect cloud flats and managed to close just before the rain began. It was a rather nice dawn rain but, alas, no cloud flats.
DIS behaved itself and we had no problems tonight.
                    ------- 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
--------------------------------------------------------------------------
 02:24 NICFPS     336( 1460) 204  35  16.6 17.1 17.4 17.1 16.8   MK-H  1.26
 03:28 NICFPS     400( 1484)  23  56  16.7 16.6 17.0 16.6 16.7   MK-H  0.84
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    67    42      8    56   (NE)    308 mstly cldy   none
     17:00    75    42      8   202  (SSW)    286 mstly cldy   none
     18:00    73    42     10   236   (SW)    311 mstly cldy   none
     19:00    68    43      3   235   (SW)    301 mstly cldy   none
     20:00    68    40      6   177    (S)    300   cloudy   lt rain
     21:00    66    43     11   102  (ESE)    334   cloudy   lt rain
     22:00    64    44     12    93    (E)    402   cloudy   lt rain
     23:00    64    44     10   106  (ESE)    693   cloudy   lt rain
     00:00    64    44     15   112  (ESE)    915   cloudy     none
     01:00    63    44     14   112  (ESE)    825  ptly cldy   none
     02:00    62    44     12   112  (ESE)    779 mstly cldy   none
     03:00    62    45     12   124   (SE)    815 mstly cldy   none
     04:00    62    47     19   129   (SE)    835 mstly cldy   none
     05:00    63    47     16   136   (SE)    675   cloudy     rain
     06:00    64    44     15   154  (SSE)    684   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: 1.2.4
    Current TUI version: 2.6.0