Subject: 3.5m Night Log 20190705
From: dembicky@apo.nmsu.edu
Date: Sat,  6 Jul 2019 11:51:47 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, July 05, 2019
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
L.Strolger        C.Kolobow             Arctic         --:--   --:--
M.Varakian        M.Varakian            DIS            00:45   01:25
M.Varakian        M.Varakian            DIS            04:15   05:29
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
JH06/R     20:24   01:10   2.1  2.7   0    0   0.0  0.0   0    0
NM01/R     01:10   05:52   3.2   0    0    0   1.5  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
Skies cleared enough to allow us to open just after 00:40.  My first half observer had already gave up due to the non-promising weather, which it wasn't looking too good when he gave up, so the clearing was a surprise.
We had a dust event at 01:25, then clouds kept us closed until 04:15
Another dust event at 05:28 out of nowhere hit us (very calm wind). This closed us for the remainder of the night.
I would recommend a CO2 cleaning of the mirror on Monday.
                    ------- 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
--------------------------------------------------------------------------
 00:49 dcamera    389( 1174)  98  49  17.1 19.1 19.6 18.8 17.4   --  1.60
 04:19 dcamera    592( 1245)  40  57  15.4 16.7 18.2 16.7 16.5   --  1.50
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    74    32      5   237  (WSW)    370  ptly cldy   none
     17:00    82    33      7   257  (WSW)    402  ptly cldy   none
     18:00    79    33      9   260    (W)    372  ptly cldy   none
     19:00    72    30      6   264    (W)    414 mstly cldy   none
     20:00    69    28      3   276    (W)    431 mstly cldy   none
     21:00    66    32      9    30  (NNE)    778   cloudy     none
     22:00    65    32     12    61  (ENE)    889   cloudy     none
     23:00    67    35     14   150  (SSE)    874   cloudy     none
     00:00    64    39     20   131   (SE)    832 mstly cldy   none
     01:00    63    39     22   136   (SE)   1062  ptly cldy   dust
     02:00    59    43     19   136   (SE)  30166  ptly cldy   dust
     03:00    62    36     17   170    (S)   4677  ptly cldy   none
     04:00    63    35     12   173    (S)   4116  ptly cldy   none
     05:00    63    35      5   176    (S)   3564  ptly cldy   dust
     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