Subject: 3.5m Night Log 20210807
From: ajt@apo.nmsu.edu
Date: Sun,  8 Aug 2021 11:32:10 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, August 07, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW04  P.Yoachim         J.Jiang
UW01  S.Hawley          A.Lin,C.Canas
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW04  ARCTIC         21:25   22:56
UW01  ARCTIC         22:58   04:50
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW04/R      20:05  22:55   0.6   0   0.7   0   1.5  0.0   0    0
UW01/R      22:55  06:14    0    0    0    0   7.2  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Radar blips in the afternoon cleared up before sunset, as did a 1-micron dust spike (maybe due to smoke?)
TSPEC currently out of commission, plus, during instrument fills the TSPEC cap was stuck and the whole nozzle tube came off. Between clouds and technical difficulties we did not open immediately. Ben Harris came to site to work on TSPEC, and once we were able to fill the instrument, the sky cleared up and we were able to open around 21:30.
The rest of the night went very smoothly, with minor interference from thin clouds and no more instrument trouble.
                    ------- FAILURE LOG -------
              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
 --    TSPEC      I/H      20:05  21:30   TSPEC fill tube came off
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 21:32 arctic   700( 1616) 232  69  18.6 20.6 19.9 20.3 19.9   SDSS_r  0.85
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    78    43     10   259    (W)    873 mstly cldy   none
     17:00    71    39      7   266    (W)    851 mstly cldy   none
     18:00    67    42      7   269    (W)   3488 mstly cldy   none
     19:00    65    39      5   263    (W)   6393   cloudy     none
     20:00    66    35      7   273    (W)    732  ptly cldy   none
     21:00    66    35      6   266    (W)    710 mstly clr    none
     22:00    67    37      8   236   (SW)   1152 mstly clr    none
     23:00    66    37      6   237  (WSW)    999 mstly clr    none
     00:00    64    39      1   219   (SW)   1568 mstly clr    none
     01:00    63    37      4   217   (SW)   1437 mstly clr    none
     02:00    62    39      6   248  (WSW)    862 mstly clr    none
     03:00    61    40      6   260    (W)   1091 mstly clr    none
     04:00    63    40      7   321   (NW)    827 mstly clr    none
     05:00    64    40      8   339  (NNW)    778  ptly cldy   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