Subject: 3.5m Night Log 20250519
From: dembicky@apo.nmsu.edu
Date: Tue, 20 May 2025 11:37:34 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, May 19, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS01  M.Crenshaw        M.Shea, K.Patel
OU02  J.Serna           J.Serna
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS01  KOSMOS         20:55   01:05
OU02  KOSMOS         01:06   05:01
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS01/R      20:07  01:10   0.8   0    0    0   4.3  0.0   0    0
OU02/R      01:10  05:52    0    0    0    0   0.6  4.1   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
Winds and Dust again kept us closed at the start of the night.  We finally opened around 20:50.
No telescope problems either with the 3.5m or ARCSAT tonight.
                    ------- 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
--------------------------------------------------------------------------
 21:15 khigh   375( 1150)  32  72   8.4 10.2 10.0  9.8  8.6   empty  2.45
 22:32 khigh   350( 1011) -31  72   6.4  7.8  8.1  7.2  6.8   empty  2.20
 01:19 klow   350(  863) -84  42   4.6  4.2  5.1  4.2  4.3   empty  1.50
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    54    15     29   264    (W)   2570 mstly clr    none
     17:00    56    16     23   252  (WSW)   3531 mstly clr    dust
     18:00    54    16     34   286  (WNW)   4905    clear     dust
     19:00    55    14     27   268    (W)   4609    clear     dust
     20:00    50    21     15   322   (NW)  10825    clear     none
     21:00    48    21     10   342  (NNW)   2654    clear     none
     22:00    45    21     12   311   (NW)   1588    clear     none
     23:00    42    21     17   340  (NNW)   1491    clear     none
     00:00    40    19     16   359    (N)   1122    clear     none
     01:00    40    18     15   360    (N)   1241    clear     none
     02:00    41    17     12   342  (NNW)    932    clear     none
     03:00    40    15     21   349    (N)   1447    clear     none
     04:00    40    15     19     2    (N)    980    clear     none
     05:00    39    14     25    16  (NNE)    832    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: 3.1.8