Subject: 3.5m Night Log 20220925
From: decolib@apo.nmsu.edu
Date: Mon, 26 Sep 2022 11:14:06 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, September 25, 2022
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU04  A.Kowalski        A.Kowalski
JH05  Q.Wang            Q.Wang
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU04  ARCTIC         --:--   --:--
JH05  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU04/R      19:04  01:10   6.0  0.1   0    0   0.0  0.0   0    0
JH05/R      01:10  06:46   5.6   0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: D.DeColibus
Cloudy in the afternoon, with some rain around sunset and nearby radar returns. The clouds persisted through all of A-half, so we didn't open. By midnight the humidity rose above our limits; while it came back down, the clouds never left.  With dismal prospects of the weather improving during the rest of the night, the B-half observer called it a night at 04:15. I stuck around for a while longer, but I gave up at 05:15.
                    ------- 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
--------------------------------------------------------------------------
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    58    39     10    82    (E)   1140 mstly cldy   none
     17:00    58    43      9    96    (E)   1915   cloudy     none
     18:00    55    42     20    75  (ENE)   2074   cloudy     none
     19:00    54    44     26    74  (ENE)   2048   cloudy   lt rain
     20:00    53    43     20    66  (ENE)   1410   cloudy     none
     21:00    51    45     18    80    (E)   1623   cloudy     none
     22:00    51    46     18    83    (E)          cloudy     none
     23:00    52    43      9    83    (E)    803   cloudy     none
     00:00    51    42     24    54   (NE)    714   cloudy     none
     01:00    49    44     26    73  (ENE)          cloudy     none
     02:00    48    40     26    78  (ENE)    469   cloudy     none
     03:00    49    39     13    89    (E)    307   cloudy     none
     04:00    51    36     11    82    (E)    364 mstly cldy   none
     05:00    50    39     12    94    (E)    885  ptly 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.
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