Subject: 3.5m Night Log 20250516
From: ajt@apo.nmsu.edu
Date: Sat, 17 May 2025 10:56:12 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, May 16, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW09  P.Szkody          P.Szkody
GS02  D.Gies            P.Wysocki
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW09  KOSMOS         20:27   23:20
GS02  ECHELLE        02:35   03:00
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW09/R      20:05  01:10   0.5  1.3   0    0   3.3  0.0   0    0
GS02/R      01:10  05:54    0   4.3   0    0   0.0  0.4   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
The roof heaters were on at the start of the night so I turned them off.
Mostly cloudy, we tried to observe through the clouds with limited luck. We gave up on KOSMOS early. I focused echelle before the B-half observer logged in, and then we waited for the clouds for a while before trying to do some observations when the clouds looked slightly thinner. Unfortunately we weren't getting much of anything so we gave up at 03:00.
One motion error on first GS02 slew. Alt 60 slewing downwards at 02:35.
                    ------- 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
--------------------------------------------------------------------------
 20:58 khigh   300( 1237) 222  75  12.4 13.6 13.4 13.3 12.4   --  1.21
 00:35 ecamera    318(  162)  59  78  11.7 11.7 12.3 11.7 11.8   Clear  0.99
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    60    10      9   262    (W)   2195   cloudy     none
     17:00    61    10     19   281    (W)   2422   cloudy     none
     18:00    59     9     16   250  (WSW)   1972   cloudy     none
     19:00    57     8     15   262    (W)   1822   cloudy     none
     20:00    55     7     12   257  (WSW)   1870   cloudy     none
     21:00    54     7     15   243  (WSW)   2360   cloudy     none
     22:00    54     6     16   244  (WSW)   2650   cloudy     none
     23:00    54     7     14   237  (WSW)   2477   cloudy     none
     00:00    55     6     20   235   (SW)   2439   cloudy     none
     01:00    53     6     20   210  (SSW)   3430   cloudy     none
     02:00    52     5     16   262    (W)   2804   cloudy     none
     03:00    52     6     21   250  (WSW)   2367   cloudy     none
     04:00    50     4     19   236   (SW)   2074   cloudy     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