Subject: 3.5m Night Log 20250224
From: ajt@apo.nmsu.edu
Date: Tue, 25 Feb 2025 13:43:37 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, February 24, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM02  C.Gray            C.Gray
GS04  S.Lepine          S.Lepine
UW01  P.Yoachim         Z.Liu,Z.Xu
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM02  ECHELLE        18:05   20:32
GS04  ECHELLE        20:33   03:50
UW01  KOSMOS         03:55   05:45
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM02/R      18:05  20:30    0    0    0    0   2.4  0.0   0    0
GS04/R      20:30  03:50    0    0    0    0   7.4  0.0   0    0
UW01/R      03:50  06:27    0    0    0    0   1.4  1.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Annoying but mostly thin clouds during A-half, clear sky for B-half. No telescope or instrument problems.
                    ------- 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
--------------------------------------------------------------------------
 18:29 ecamera    381(  203) 269  48   9.2 10.5 10.1 10.4  9.6   ND2  0.82
 19:26 ecamera    376(  143) 268  15   9.0  9.1  9.4  8.7  8.7   ND2  1.27
 04:12 kosmos   275(  897) 151  44   7.6  6.6  7.3  6.4  7.3   --  0.92
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    51    20     10   328  (NNW)    377  ptly cldy   none
     17:00    50    18      7   330  (NNW)    295  ptly cldy   none
     18:00    49    18      1   234   (SW)    305 mstly clr    none
     19:00    48    17      7   297  (WNW)    345 mstly clr    none
     20:00    47    16      6   267    (W)    266 mstly clr    none
     21:00    47    14      8   268    (W)    243 mstly clr    none
     22:00    47    11      7   262    (W)    750 mstly clr    none
     23:00    47    11      8   267    (W)    419 mstly clr    none
     00:00    46     9      6   256  (WSW)    482    clear     none
     01:00    48    10      7   264    (W)    447    clear     none
     02:00    47     7      5   270    (W)    443    clear     none
     03:00    46     7      6   344  (NNW)    446    clear     none
     04:00    46     4      5   350    (N)    422    clear     none
     05:00    49     6      7   256  (WSW)    373    clear     none
     06:00    47     5      4   288  (WNW)    390    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.
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