Subject: 3.5m Night Log 20210730
From: decolib@apo.nmsu.edu
Date: Sat, 31 Jul 2021 11:36:06 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, July 30, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
JH01  Z.Rustamkulov     Z.Rustamkulov
JH01  Z.Rustamkulov     Z.Rustamkulov
UW11  Y.Notsu           Y.Notsu,K.Namekata
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
JH01  ARCTIC         22:39   01:10
JH01  ARCTIC         01:10   02:25
UW11  ECHELLE        02:28   05:15
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
JH01/R      20:12  01:10   2.4   0    0    0   1.6  1.0   0    0
JH01/R      01:10  02:30    0    0    0    0   0.0  1.3   0    0
UW11/R      02:30  06:08    0   0.9   0    0   0.0  2.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: D.DeColibus
We could not open at sunset because of nearby thunderstorms and pop-up rain showers; one particularly long-lived storm to the east was too close for comfort. We finally opened up at 22:39. The weather was partly to mostly cloudy for much of A and B half. Eventually humidity forced us closed at 05:15.
Aside from some ARCSAT issues detailed in a seperate email, most of the night was uneventful.
                    ------- 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
--------------------------------------------------------------------------
 22:46 arctic   498( 1179) 263  52  14.8 15.4 15.7 15.3 14.7   SDSS_r  1.06
 01:21 arctic   686( 1299) 146  31  13.9 13.6 14.2 13.6 13.6   SDSS_r  1.20
 02:33 ecamera    687(  187) -50  45  14.2 13.6 14.1 13.6 13.8   ND3  1.03
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    62    48     10   139   (SE)   1046 mstly cldy   none
     17:00    63    44      3   138   (SE)    901 mstly cldy   none
     18:00    66    43      3   199  (SSW)    789  ptly cldy   none
     19:00    63    45      3   124   (SE)    942  ptly cldy   none
     20:00    59    47     14   113  (ESE)   1313 mstly clr    none
     21:00    58    46     18   125   (SE)   1226 mstly clr    none
     22:00    56    49     17   114  (ESE)   1653  ptly cldy   none
     23:00    59    41     18   136   (SE)    624    clear     none
     00:00    58    47     18   155  (SSE)   1239  ptly cldy   none
     01:00    57    48     16   175    (S)   1332 mstly cldy   none
     02:00    58    49     13   169    (S)   1353 mstly cldy   none
     03:00    57    49     13   190    (S)   1310 mstly clr    none
     04:00    56    49      8   190    (S)   1461    clear     none
     05:00    54    49      1   174    (S)           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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