Subject: 3.5m Night Log 20240219
From: mcmillan@apo.nmsu.edu
Date: Tue, 20 Feb 2024 12:25:01 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, February 19, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
WY04  M.Brotherton      M.Brotherton
BY01  E.Hintz           S.Call,T.Morrell
UW06  B.Morris          S.Hawley
UW01  S.Hawley          J.Libby-Roberts,A.Hotnisky
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY04  TSPEC          17:56   19:18
BY01  TripleSpec     19:20   20:18
UW06  ECHELLE        20:22   00:10
UW01  ARCTIC         00:22   03:55
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY04/R      18:00  19:30    0    0    0    0   0.0  1.5   0    0
BY01/R      19:30  20:30    0    0    0    0   0.0  1.0   0    0
UW06/R      20:30  00:10    0    0    0    0   0.0  3.7   0    0
UW01/R      00:10  06:33   1.9  0.7   0    0   0.0  3.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
High thin clouds at sunset persisted on and off, then grew thicker after midnight.  The second half program got questionable data and gave up before twilight.
Telescope and instruments worked well 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
--------------------------------------------------------------------------
 18:05 tcamera    478( 1347)  30  60   4.9  6.7  6.3  6.3  5.8   Ks  0.96
 20:25 ecamera    446(  -16) -76  32   4.9  4.6  5.0  4.5  4.9   ND2  1.03
 00:33 arctic     419( 1034)  54  60   4.8  4.6  5.1  4.6  4.7   SDSS_r  1.10
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    47    15      5   213  (SSW)     94  ptly cldy   none
     17:00    46     4      4   193  (SSW)     87  ptly cldy   none
     18:00    44    -5      7   187    (S)     66  ptly cldy   none
     19:00    44    -7      6   186    (S)     69  ptly cldy   none
     20:00    44    -8      7   182    (S)     62  ptly cldy   none
     21:00    43    -6      8   184    (S)     62  ptly cldy   none
     22:00    44    -6      2   185    (S)     54  ptly cldy   none
     23:00    43    -6     13   160  (SSE)     64  ptly cldy   none
     00:00    44    -7     14   142   (SE)     77  ptly cldy   none
     01:00    45    -6      9   164  (SSE)     58 mstly cldy   none
     02:00    44    -1     13   159  (SSE)    100 mstly cldy   none
     03:00    43    -3     18   167  (SSE)     95 mstly cldy   none
     04:00    42     6     13   178    (S)    249 mstly cldy   none
     05:00    39    13     15   169    (S)    451 mstly cldy   none
     06:00    39    13     19   166  (SSE)    521 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: 3.1.3