Subject: 3.5m Night Log 20210803
From: cgray@apo.nmsu.edu
Date: Wed,  4 Aug 2021 10:54:22 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, August 03, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW07  E.Bellm           E.Bellm, D.Wang
CU04  Y.Notsu           Y.Notsu, K.Namekata
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW07  DIS            --:--   --:--
CU04  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW07/R      20:08  01:10   5.0  0.0   0    0    0    0    0    0
CU04/R      01:10  06:11   1.3  3.7   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
I thought it would improve. I thought we would get on sky. It didn't and we didn't. Humidity spiked at sunset and there was fog rolling on the edge of the cloud cam. The rain started falling a little after 1:00 am which then turned to clouds with more rain on the way. The observer called it at 4:30 when they ran out of usable time.
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
--------------------------------------------------------------------------
              ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    64    52      9   256  (WSW)   2221  ptly cldy  humid
     17:00    64    51      9   264    (W)   1997  ptly cldy  humid
     18:00    62    54      9   217   (SW)   2074  ptly cldy  humid
     19:00    62    54      6   198  (SSW)   2167 mstly clr   humid
     20:00    59    53      7   129   (SE)   2274 mstly clr   humid
     21:00    59    52      7   217   (SW)        mstly clr   humid
     22:00    59    49      4   202  (SSW)   1808  ptly cldy   none
     23:00    58    49      6   224   (SW)   1770 mstly cldy   none
     00:00    59    50     11   203  (SSW)   2209 mstly cldy   none
     01:00    57    50      5   192  (SSW)   2332   cloudy   lt rain
     02:00    53    45     21    43   (NE)          cloudy     rain
     03:00    50    47     17    63  (ENE)          cloudy   lt rain
     04:00    52    46      5    86    (E)          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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