Subject: 3.5m Night Log 20210412
From: mcmillan@apo.nmsu.edu
Date: Tue, 13 Apr 2021 12:32:08 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, April 12, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM01  K.Sanderson       K.Sanderson,M.Prescott
OU03  J.DerKacy         J.DerKacy
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM01  DIS            21:03   01:11
OU03  DIS            01:12   05:43
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM01/R      19:40  01:10    0    0    0    0   4.9  0.6   0    0
OU03/R      01:10  06:27    0    0    0    0   5.3  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
During checkout, I had to reset the NICFPS terminal server and restart the heartbeat for Agile.
We had clouds with virga at sunset that I thought would go away, but they got thicker for a while so we weren't able to open until about 9 pm.  Then the sky cleared rapidly and we got some very nice data on very faint targets, until the clouds started forming again nearby, and then dissipating, and then re-forming, and generally being hard to predict.  This didn't stop observations but it did decrease signal level.
Second half, the clouds cleared again pretty quickly, and observations were very productive.
                    ------- 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
--------------------------------------------------------------------------
 21:09 dcamera    430(  785)  82  45  11.1 12.2 12.2 12.2 11.2   -  1.26
 01:20 dcamera    490(  729) 351  37   9.6  9.6 10.2  9.5  9.6   -  1.46
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    58    21     15   228   (SW)   2226  ptly cldy   none
     17:00    60    21     14   200  (SSW)   2162  ptly cldy   none
     18:00    57    21     14   235   (SW)   1931  ptly cldy   none
     19:00    52    18     16   184    (S)   2040 mstly cldy   none
     20:00    52    19     14   183    (S)   2297 mstly cldy   none
     21:00    52    18     16   182    (S)   2081 mstly clr    none
     22:00    52    18     12   210  (SSW)   1903    clear     none
     23:00    52    17     11   163  (SSE)   2077    clear     none
     00:00    49    16     14   186    (S)   2013 mstly clr    none
     01:00    50    16     15   195  (SSW)   2370  ptly cldy   none
     02:00    48    17     15   193  (SSW)   2551  ptly cldy   none
     03:00    48    18     15   182    (S)   2795    clear     none
     04:00    47    18      5   166  (SSE)   2859    clear     none
     05:00    43    19     10   188    (S)   3423    clear     none
     06:00    42    19      5   184    (S)   3642    clear     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.
              ----------  TELESCOPE SOFTWARE  ----------
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Current HUB version: v20171231_01
Current TUI version: 2.6.0