Subject: 3.5m Night Log 20250214
From: ajt@apo.nmsu.edu
Date: Sat, 15 Feb 2025 12:26:43 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, February 14, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW03  A.Heinze          A.Heinze
UW08  S.Hawley          L.Hebb
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW03  ECHELLE        --:--   --:--
UW08  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW03/R      17:57  00:10   2.0  4.2   0    0   0.0  0.0   0    0
UW08/R      00:10  06:37    0   6.4   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Closed all night due to various weather conditions.
High wind and dust, then opaque clouds and radar, then snow and more wind gusts. Max wind gusts of about 45mph, max 1-micron dust counts of about 13,000.
At 22:23 there was a 5.0 magnitude earthquake in Texas, we were closed but the effect was visible on the telescope telemetry. No dome collision and test slews afterwards showed no problems. Thank you Russet for checking in on us!
Started snowing (wintry mix) around 02:25, ran snow program from 02:45-04:45. About an inch of snow on the ground. Telescope is parked facing south.
                    ------- 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    44    24     20   250  (WSW)   3086  ptly cldy   dust
     17:00    43    23     35   255  (WSW)   8131  ptly cldy   dust
     18:00    40    22     29   270    (W)   8752  ptly cldy   dust
     19:00    40    24     29   256  (WSW)   8775  ptly cldy   dust
     20:00    39    24     26   256  (WSW)   6103 mstly cldy   dust
     21:00    39    25     22   256  (WSW)   5150   cloudy     dust
     22:00    38    25     24   269    (W)   2498   cloudy     none
     23:00    37    25     21   262    (W)   1876   cloudy     none
     00:00    36    26     27   264    (W)   1911   cloudy     none
     01:00    35    28     37   255  (WSW)          cloudy    humid
     02:00    29    28     21   295  (WNW)          cloudy     snow
     03:00    25    25     19   294  (WNW)          cloudy     snow
     04:00    22    23     25   298  (WNW)          cloudy   lt snow
     05:00    22    22     21   282  (WNW)          cloudy   lt snow
     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