Subject: 3.5m Night Log 20250913
From: cgray@apo.nmsu.edu
Date: Sun, 14 Sep 2025 10:39:21 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, September 13, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY04  M.Joner           M.Joner
JH04  K.Schlaufman      K.Schlaufman
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY04  ARCTIC         --:--   --:--
JH04  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY04/R      19:20  01:10   3.9  1.9   0    0    0    0    0    0
JH04/R      01:10  06:38   0.0  5.5   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Rain, rain, rain, fog, clouds, rain. It smelled great! There was one lightning strike must have been very near or on site but everything seemed fine. Given all the rain, I left the telescope parked low. JH04 had a cutoff of 5am and bu 4:40 we were still under fog, so I called it.
No dataq issues tonight! But Alcor was down. Given all the wet, I wasn't about to open the box and restart via the USB.
                    ------- 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
--------------------------------------------------------------------------
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    56    31     14   254  (WSW)    565   cloudy     fog
     17:00    55    31     10   215   (SW)    601   cloudy     rain
     18:00    54    31     13   225   (SW)    547   cloudy     rain
     19:00    53    31      5   266    (W)    666   cloudy     rain
     20:00    53    31     15   276    (W)    329   cloudy     fog
     21:00    54    31     11   278    (W)    489   cloudy    humid
     22:00    54    31     12   281    (W)    443 mstly clr   humid
     23:00    53    31      8   271    (W)    584 mstly clr   humid
     00:00    53    31      9   268    (W)    585  ptly cldy  humid
     01:00    52    31      7   278    (W)    659 mstly clr    fog
     02:00    51    30      6   262    (W)    840 mstly clr    fog
     03:00    51    30      5   254  (WSW) 226857  ptly cldy   fog
     04:00    50    29      5   262    (W) 200043  ptly cldy   fog
     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: 3.1.8