Subject: 3.5m Night Log 20240919
From: ajt@apo.nmsu.edu
Date: Fri, 20 Sep 2024 11:55:26 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, September 19, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV02  S.Majewski        J.Davidson,S.Majewski
NM01  A.Conly           A.Conly,N.Chanover
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV02  DIFFIT         19:20   00:57
NM01  ECHELLE        01:13   03:14
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV02/O      19:12  01:10    0    0    0    0   0.9  5.1   0    0
NM01/R      01:10  06:42    0   3.5   0    0   0.0  2.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Zeroed NA2 rotator for DIFFIT at start of night (+0.01)
Annoying clouds on-and-off throughout the night, but they got too bad to observe through at 03:15. We gave up a couple hours later.
No telescope or instrument problems.
DIFFIT is still mounted, please do not rotate the instrument and be careful of cabling on floor by NA2.
                    ------- 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
--------------------------------------------------------------------------
 00:24 ecamera    282(  366) 352  54  16.6 16.6 17.2 16.5 16.6   ND5  0.82
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    75    36     15   192  (SSW)    592 mstly clr    none
     17:00    72    36     18   222   (SW)    641 mstly clr    none
     18:00    68    36     12   240  (WSW)    698 mstly clr    none
     19:00    65    35     12   227   (SW)    649 mstly clr    none
     20:00    64    36      7   203  (SSW)    758  ptly cldy   none
     21:00    64    35      5   204  (SSW)   1017  ptly cldy   none
     22:00    64    33      1   200  (SSW)    992  ptly cldy   none
     23:00    65    37     11   180    (S)   1024    clear     none
     00:00    64    37     13   181    (S)   1108    clear     none
     01:00    63    37     14   166  (SSE)   1015 mstly clr    none
     02:00    61    48     22   159  (SSE)    897 mstly cldy   none
     03:00    61    50     20   142   (SE)    765 mstly cldy   none
     04:00    60    51     17   146   (SE)        mstly cldy   none
     05:00    60    48     16   158  (SSE)    747 mstly 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: 3.1.5