Subject: 3.5m Night Log 20250411
From: cgray@apo.nmsu.edu
Date: Sat, 12 Apr 2025 12:37:16 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, April 11, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
OU03  G.Jewett          G.Jewett
BY06  E.Hintz           S.Call
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU03  arctic         19:39   01:04
BY06  TripleSpec     01:16   06:10
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU03/R      19:39  01:10    0    0    0    0   0.0  5.5   0    0
BY06/R      01:10  06:28    0    0    0    0   0.1  5.2   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
A lovely night! The seeing was moderate given the east winds, but everything was clear and everyone was able to get lots of good data.
No problems 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
--------------------------------------------------------------------------
 21:48 arctic   272( 1323) 241  40  14.3 13.5 14.1 13.2 13.7   BG40  1.06
 23:43 arctic   207( 1176) 204  49  11.7 11.9 12.7 11.6 11.5   BG40  1.81
 00:35 arctic   257( 1209) 208  44  12.4 11.5 12.2 11.3 11.6   BG40  2.12
 01:20 tcamera    279( 1367) 223  44  12.6 11.2 12.0 11.1 11.6   Ks  1.16
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    64    17     12   257  (WSW)   2829    clear     none
     17:00    64    13     15   254  (WSW)   2500    clear     none
     18:00    66    12     20   231   (SW)   2572    clear     none
     19:00    60     9     13   252  (WSW)   2457    clear     none
     20:00    57    10      9   184    (S)   2506    clear     none
     21:00    58     8     13   182    (S)   2373    clear     none
     22:00    58     7     10   194  (SSW)   2561    clear     none
     23:00    54     8     13   155  (SSE)   2474    clear     none
     00:00    53    22     16   146   (SE)   3062    clear     none
     01:00    54    17     10   172    (S)   2927    clear     none
     02:00    56    19     15   157  (SSE)   2895    clear     none
     03:00    53    21     12   157  (SSE)   3003    clear     none
     04:00    52    17     11   169    (S)   2848    clear     none
     05:00    54    13     14   186    (S)   2756    clear     none
     06:00    54    14      9   187    (S)   2906    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