Subject: 3.5m Night Log 20200621
From: mcmillan@apo.nmsu.edu
Date: Mon, 22 Jun 2020 11:38:20 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, June 21, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM03  M.Prescott        M.Prescott,A.Dijeau,K.Sanderson
UW09  G.Wallerstein     E.Farrell
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM03  ARCTIC         20:20   01:02
UW09  DIS            01:15   05:05
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM03/R      20:24  01:10    0    0    0    0   4.2  0.6   0    0
UW09/R      01:10  05:47    0    0   0.1   0   4.5  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Another clear night with pretty good seeing, like the previous night.  Also like the previous night, we again had a motion error when moving to a position low in the SSW after program changeover.  The motion error occurred at the start of the slew, though, not while tracking, so that was different.  I slewed up and then down and then up and it was happy again.
Smoke smell was strong in the dome at morning twilight, but the visual evidence and particle counters said this was from distant fires, probably in Arizona.
                    ------- FAILURE LOG -------
              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
UW09     D       T/H      01:15   01:19   az motion error
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 20:59 arctic   498( 1443) -120  50  19.6 21.0 21.1 20.4 19.8   3250  0.93
 01:30 dcamera    478( 1112) 354  27  18.2 17.8 18.5 17.7 17.9   -  1.60
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    73    29     13   270    (W)   1150    clear     none
     17:00    71    28     12   256  (WSW)   1094    clear     none
     18:00    74    30     13   261    (W)   1087    clear     none
     19:00    71    27     13   265    (W)    867    clear     none
     20:00    68    24     10   266    (W)    817    clear     none
     21:00    67    23      7   261    (W)    688    clear     none
     22:00    66    22     12   240  (WSW)    929    clear     none
     23:00    65    22     10   257  (WSW)    666    clear     none
     00:00    65    22      7   257  (WSW)    560    clear     none
     01:00    64    22     10   266    (W)    547    clear     none
     02:00    64    22     10   275    (W)    540    clear     none
     03:00    64    22      6   292  (WNW)    585    clear     none
     04:00    63    21      9   322   (NW)    805    clear     none
     05:00    64    21      6   309   (NW)    985    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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Current HUB version: v20171231_01
Current TUI version: 2.6.0