Subject: 3.5m Night Log 20210524
From: dembicky@apo.nmsu.edu
Date: Tue, 25 May 2021 11:48:23 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, May 24, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU06  J.Dexter          J.Dexter
BY01  B.Boizelle        B.Boizelle
UW12  B.Morris          L.Hebb
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU06  TSPEC          19:46   01:09
BY01  TSPEC          01:10   02:36
UW12  ECHELLE        02:40   05:46
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU06/R      20:11  01:10    0    0    0    0   0.0  5.0   0    0
BY01/R      01:10  02:40    0    0    0    0   0.0  1.5   0    0
UW12/R      02:40  05:50    0    0    0    0   0.4  2.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
Motion error @20:30 Az 139.7 Alt 56.4 I saw oscillations just before the motion error.  I slewed up to 70 then downward.  Motion error on slew downward @ 58.3.  I slewed down to 30 deg then upward.  This appeared to work.
No other motion errors or oscillations, that I noticed, for the remainder 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
--------------------------------------------------------------------------
 20:23 tcamera    532( 1499)  70  49  13.7 17.1 16.6 16.9 14.8   Ks  0.91
 22:25 tcamera    372( 1173) 168  70  13.7 14.0 14.5 13.5 13.4   Ks  1.03
 01:12 tcamera    432( 1183) 191  49  12.9 12.6 13.3 12.4 12.8   Ks  0.96
 02:43 ecamera    470( -118) 191  62  12.0 12.0 12.7 11.9 11.9   clear  1.01
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    65    22     17   224   (SW)   1412  ptly cldy   none
     17:00    65    22     13   246  (WSW)   1165  ptly cldy   none
     18:00    64    20     14   262    (W)   1210    clear     none
     19:00    63    19     13   214   (SW)   1100    clear     none
     20:00    58    14     12   222   (SW)   1108    clear     none
     21:00    58    14     10   263    (W)   1054    clear     none
     22:00    57    13     11   267    (W)    799    clear     none
     23:00    57    11     11   274    (W)    739    clear     none
     00:00    56    12     12   265    (W)    837    clear     none
     01:00    56    11     14   272    (W)    756    clear     none
     02:00    55    13     13   266    (W)    714    clear     none
     03:00    53    10      9   289  (WNW)   1125    clear     none
     04:00    54    11      6    10    (N)   1437    clear     none
     05:00    52     9     13    17  (NNE)   1056    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.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.4.2
Current HUB version: v20171231_01
Current TUI version: 2.6.0