Subject: 3.5m Night Log 20240831
From: tsutherland@apo.nmsu.edu
Date: Sun,  1 Sep 2024 12:29:26 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, August 31, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
OU01  G.Jewett          G.Jewett
UW06  C.Chandler        C.Chandler,M.Frissell
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU01  ARCTIC         19:20   23:45
OU01  ARCTIC         00:00   01:10
UW06  ARCTIC         01:10   05:51
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU01/R      19:37  01:10   1.3   0    0    0   4.3  0.0   0    0
UW06/R      01:10  06:30    0    0    0    0   4.0  1.4   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: M.Croom, T.Sutherland
Weather looks pretty clear at the start of the night.
Fiduciary error in az happened during first test slew.
Tertiary amplifier faulted again. Same error that Jack had a couple nights ago. Thank you Bill for fixing it.
Restarted ARCSAT twice. The exposure froze.
Wind and humidity made us close at 22:45 for an hour and 15 minutes. Humidity was >70% for the majority of the night.
UW06 finished science targets at around 05:50, and wanted dome flats, so we closed early for that.
                    ------- 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
--------------------------------------------------------------------------
 20:27 arctic   356( 1313) 201  63  11.0 11.8 12.6 11.5 11.2   BG40  1.25
 00:16 arctic   259( 1140) 141  46  10.7 10.0 10.7 10.0 10.5   BG40  2.05
 01:32 arctic   328( 1217) -10  25  10.3  9.8 10.4  9.8 10.0   CUVR  2.98
   ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    56    42      9    22  (NNE)   1179    clear     none
     17:00    59    39     15    57  (ENE)   1136    clear     none
     18:00    58    42     13    50   (NE)    900 mstly clr    none
     19:00    55    44     17    66  (ENE)    908    clear    humid
     20:00    52    45     24    70  (ENE)           clear    humid
     21:00    51    47     23    54   (NE)           clear    humid
     22:00    51    46     18    70  (ENE)           clear    humid
     23:00    50    46      1   233   (SW)           clear    humid
     00:00    52    40     19    70  (ENE)           clear    humid
     01:00    51    43     20    79    (E)           clear    humid
     02:00    50    44     19    77  (ENE)           clear    humid
     03:00    50    44     17    72  (ENE)        mstly clr   humid
     04:00    49    44      8    94    (E)        mstly clr   humid
     05:00    51    44      5   103  (ESE)        mstly clr   humid
     06:00    50    45     11    85    (E)        mstly clr   humid
     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: 3.1.5