Subject: 3.5m Night Log 20210414
From: cgray@apo.nmsu.edu
Date: Thu, 15 Apr 2021 11:30:45 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, April 14, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU04  H.Roberts         H.Roberts
WY01  J.McLane          J.McLane
NM09  K.Kinemuchi       K.Kinemuchi
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU04  DIS            --:--   --:--
WY01  TSPEC          --:--   --:--
NM09  DIS            --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU04/R      19:41  01:10   3.0  2.5   0    0    0    0    0    0
WY01/R      01:10  02:40   1.5  0.0   0    0    0    0    0    0
NM09/R      02:40  06:25   3.8  0.0   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Well, I knew the cloud cover wasn't supposed to be good tonight but I didn't realize it would be this bad. We did technically open at sunset and focused, but it was too cloudy to observe any targets for CU04. We kept the dome open for a few hours hoping we'd be able to punch through, but then radar started cropping up and we closed. While radar was always around us it never rained. We never reopened.
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
--------------------------------------------------------------------------
 20:10 dcamera    532(  805)  42  66   9.6 10.8 10.6 10.6  9.7   --  1.09
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    55    20     18   218   (SW)   2156 mstly cldy   none
     17:00    57    21     20   213  (SSW)   2159 mstly cldy   none
     18:00    53    16     18   208  (SSW)   1988 mstly cldy   none
     19:00    50    12     17   227   (SW)   1725 mstly cldy   none
     20:00    49    12     18   187    (S)   1777 mstly cldy   none
     21:00    50    12     15   199  (SSW)   2263   cloudy     none
     22:00    50    13     19   218   (SW)   2007   cloudy     none
     23:00    49    14     17   200  (SSW)   1980   cloudy     none
     00:00    48    18     14   205  (SSW)   1889   cloudy     none
     01:00    48    18     16   205  (SSW)   2012   cloudy     none
     02:00    47    17     14   221   (SW)   1844   cloudy     none
     03:00    46    17     14   241  (WSW)   1820   cloudy     none
     04:00    45    17      8   261    (W)   1805   cloudy     none
     05:00    44    15     11   249  (WSW)   1920   cloudy     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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