Subject: 3.5m Night Log 20200915
From: trudyk@apo.nmsu.edu
Date: Wed, 16 Sep 2020 12:44:12 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, September 15, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM01  E.Dahl            E.Dahl
JH05  K.Schlaufman      H.reggiani
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM01  NAIC           19:45   01:08
JH05  ECHELLE        01:12   06:20
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM01/R      19:17  01:10    0    0    0    0   5.9  0.0   0    0
JH05/R      01:10  06:40    0    0    0    0   4.5  1.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Had some light rain before sunset, but we were able to open by 19:45. Conditions were partly cloudy with fair to average seeing. Remaining clouds began to blow out around 21:30. There was still haze from fires, though. Seeing improved after 00:00. We were open the rest of the night.
                    ------- 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
--------------------------------------------------------------------------
 23:03 naic   438( 1247) -18  30  10.7 11.4 11.8 11.4 10.8   -  1.2
 01:19 ecamera    398( -273)  81  81  10.7 10.4 11.1 10.1 10.5   ND4  0.70
           ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    58    30      2   199  (SSW)    739  ptly cldy lt rain
     17:00    62    29      4   217   (SW)    705  ptly cldy lt rain
     18:00    56    30      1   250  (WSW)    631  ptly cldy   none
     19:00    53    30      2   328  (NNW)    590  ptly cldy   none
     20:00    53    30      9    84    (E)    807  ptly cldy   none
     21:00    54    30      3   137   (SE)    743 mstly clr    none
     22:00    52    30      8   128   (SE)    661 mstly clr    none
     23:00    52    30      3   145   (SE)    702 mstly clr    none
     00:00    51    30      3   162  (SSE)    677    clear     none
     01:00    52    30      2   206  (SSW)    681    clear     none
     02:00    52    30      2   248  (WSW)    569    clear     none
     03:00    51    30      5   264    (W)    603    clear     none
     04:00    50    30      8   306   (NW)    618    clear     none
     05:00    50    30      9   316   (NW)    699    clear     none
     06:00    47    30      6   344  (NNW)    848    clear     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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