Subject: 3.5m Night Log 20231127
From: cgray@apo.nmsu.edu
Date: Tue, 28 Nov 2023 12:12:57 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, November 27, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
FG01  D.Buzasi          D.Buzasi
JH05  N.Dello           A.McKay
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
FG01  echelle        18:56   23:16
JH05  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
FG01/R      17:06  00:10   0.0  2.8   0    0   0.0  4.3   0    0
JH05/R      00:10  06:36   0.0  6.4   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started out with virga and radar returns around us but things started clearing up around 7pm and we were able to open. The seeing was great! ...And then the humidity came back up. I held out as long as I could, but we had to close shortly after 11pm and we were not able to reopen.
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
--------------------------------------------------------------------------
 19:03 ecamera    348( -304) 104  76  -0.1  1.1  1.4  1.8  1.2   ND2  0.97
 21:50 ecamera    378( -326) -31  61   0.4 -0.1  0.3 -0.3 -0.0   clear  0.73
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    34    27      2   216   (SW)   1090 mstly cldy  humid
     17:00    32    27      4    92    (E)   1285 mstly cldy  humid
     18:00    32    25      6    93    (E)   1150 mstly cldy  humid
     19:00    32    25      6   236   (SW)        mstly clr    none
     20:00    32    26      4   259    (W)   1064 mstly clr    none
     21:00    33    25      5   244  (WSW)    903 mstly clr    none
     22:00    33    28      5   253  (WSW)   1258 mstly clr   humid
     23:00    32    28      4   258  (WSW)   1102 mstly clr   humid
     00:00    32    27      5   269    (W)           clear    humid
     01:00    33    27      7   273    (W)           clear    humid
     02:00    32    27      9   312   (NW)           clear    humid
     03:00    32    27      8   309   (NW)           clear    humid
     04:00    32    27     10   318   (NW)           clear    humid
     05:00    32    26     10   315   (NW)           clear    humid
     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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