Subject: 3.5m Night Log 20250520
From: dembicky@apo.nmsu.edu
Date: Wed, 21 May 2025 12:05:52 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, May 20, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW03  B.Benda           B.Benda
UW02  P.Yoachim         Z.Xu, Z.Liu
GS03  S.Lepine          Z.Way
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW03  ECHELLE        20:08   22:56
UW02  KOSMOS         22:58   00:58
GS03  ECHELLE        01:05   05:40
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW03/R      20:08  22:58    0    0    0    0   2.8  0.0   0    0
UW02/R      22:58  01:10    0    0    0    0   2.2  0.0   0    0
GS03/R      01:10  05:52    0    0    0    0   1.1  3.6   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
There was some discussion at our obs spec meeting about the current nominal focus value and that it had appeared to be low a few months back.  I recorded the focus, after telescope was cool, for the Echelle and KOSMOS tonight.
Echelle Focus 321
KOSMOS Focus 321
About 04:50UT the all sky camera captured a really nice rocket plume.  You can see the white exhaust and the red afterglow.
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
--------------------------------------------------------------------------
 20:58 ecamera    427(  281) 228  73  11.6 11.9 12.1 11.5 11.5   ND1  0.73
 22:11 ecamera    321(  161) -97  41  11.8 11.2 11.7 10.9 11.6   clear  1.10
 23:07 kosmos   321( 1143) -120  50  11.3 10.9 11.7 10.8 11.0   empty  0.77
 01:11 ecamera    320(   96) 163  61  11.2 10.1 10.9 10.0 10.3   Clear  1.05
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    57     4      9   344  (NNW)    956    clear     none
     17:00    56     6     15   355    (N)    914    clear     none
     18:00    57     6      5   326   (NW)    884    clear     none
     19:00    57     6     10   326   (NW)    967    clear     none
     20:00    53     3      7   325   (NW)    951    clear     none
     21:00    53     3     10   310   (NW)    980    clear     none
     22:00    53    11     11   300  (WNW)   1056    clear     none
     23:00    53    13      8   238  (WSW)   1151    clear     none
     00:00    52    12      8   197  (SSW)   1451    clear     none
     01:00    52    12      9   205  (SSW)   1494    clear     none
     02:00    52    13      9   191    (S)   1392    clear     none
     03:00    52    14      9   181    (S)   1422    clear     none
     04:00    52    12     13   224   (SW)   1390    clear     none
     05:00    52    12      9   239  (WSW)   1548    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