Subject: 3.5m Night Log 20200623
From: trudyk@apo.nmsu.edu
Date: Wed, 24 Jun 2020 11:25:20 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, June 23, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM02  C.Churchill       M.Broom
UW08  E.Bellm           M.Graham
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM02  DIS            --:--   --:--
UW08  DIS            02:20   05:00
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM02/R      20:24  01:10    2.5  2.3  0    0   0.0  0.0   0    0
UW08/R      01:10  05:48    1.1  0    0    0   3.5  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Evening started with a line of thunderstorms marching across the county. Rain continued for some time, tapering off around 22:00. A line of rain on radar kept marching over the site though. At 00:45 the rain started in ernest again. Rain stopped after 01:30. By 02:20 it looked safe to open, so we did. It was partly cloudy and seeing was fair. We stayed open until dawn.
                    ------- 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
--------------------------------------------------------------------------
 02:25 dcamera    573( 1054)  92  60  14.3 15.1 15.4 15.2 15.1   -  1.38
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    73    45     17   222   (SW)   2806  ptly cldy   none
     17:00    69    44     14   208  (SSW)   2516 mstly cldy   none
     18:00    67    48     13   189    (S)   2583   cloudy     rain
     19:00    62    47     18   351    (N)   2059   cloudy     rain
     20:00    51    34     21    76  (ENE)   2094   cloudy     rain
     21:00    54    35     11   119  (ESE)   1323   cloudy     rain
     22:00    57    38     10   163  (SSE)   1649   cloudy   lt rain
     23:00    66    38     19    19  (NNE)   1127   cloudy     none
     00:00    60    37     19     6    (N)   1484   cloudy     rain
     01:00    61    36      6   330  (NNW)   1595   cloudy   lt rain
     02:00    62    33     12   267    (W)   1729  ptly cldy   none
     03:00    61    34      7   260    (W)   1329  ptly cldy   none
     04:00    62    33      8   257  (WSW)   1222 mstly clr    none
     05:00    59    36      7   273    (W)   1214 mstly clr    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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