Subject: 3.5m Night Log 20190308
From: trudyk@apo.nmsu.edu
Date: Sat,  9 Mar 2019 12:03:10 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, March 08, 2019
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
G.Stringfellow    G.Stringfellow        TSPEC          --:--   --:--
J.Roberts         J.Roberts             ARCTIC         --:--   --:--
T.Thuan           Y.Izotov              DIS            --:--   --:--
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
CU07/R     18:14   20:50    0.7  1.9  0    0   0.0  0.0   0    0
CU02/R     20:50   00:45    3.9  0    0    0   0.0  0.0   0    0
UV02/R     00:45   06:13    5.5  0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Ecam needed a hub start nubs during checkout. We began the night with a quadfecta of conditions: high wind, high dust, high humidity and rain that quickly turned to snow. Then rain again, then snow. Weather couldn't decided on rain or snow. Due to high winds, did not do complete slew tests during checkout. Precipitation stopped, but gusts continued to increase exceeding 60mph starting around 19:45. Around 22:00 the precipitation alarm went off again, and there was 1/2" of snow dumped within half an hour. We were unable to run the snow program due to high winds.
Around midnight, the skies cleared, and wind began to back off. I felt safe enough to open the hatch and check the roof. There was loose snow (a dusting) but a solid layer of ice on the lightning arrestors. The scope was left parked due south. We did not open at all.
                    ------- 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
--------------------------------------------------------------------------
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    35    30     33   238  (WSW)   9143   cloudy   lt rain
     17:00    34    30     28   227   (SW)          cloudy   lt snow
     18:00    34    31     41   219   (SW)          cloudy    humid
     19:00    32    31     34   207  (SSW)          cloudy    humid
     20:00    31    30     39   257  (WSW)          cloudy    humid
     21:00    30    30     38   256  (WSW)          cloudy    humid
     22:00    29    29     52   264    (W)          cloudy     snow
     23:00    27    27     33   269    (W)          cloudy   lt snow
     00:00    23    22     34   258  (WSW)          cloudy    humid
     01:00    21    20     21   267    (W)          cloudy    humid
     02:00    19    17     10   269    (W)          cloudy    humid
     03:00    19    16     13   283  (WNW)          cloudy    humid
     04:00    19    13     15   304   (NW)          cloudy     none
     05:00    20    11     13   346  (NNW)          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.
                          TELESCOPE STATUS
    Telescope drives operational. Current TCC version: 1.2.4
    Current TUI version: 2.6.0