Subject: 3.5m Night Log 20210708
From: mcmillan@apo.nmsu.edu
Date: Fri,  9 Jul 2021 12:02:32 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, July 08, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM05  N.Chanover        N.Chanover
CU01  N.Schneider       C.Schmidt
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM05  ARCTIC         20:24   01:07
CU01  ECHELLE        01:10   05:25
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM05/R      20:23  01:10    0    0    0    0   4.8  0.0   0    0
CU01/R      01:10  05:54    0    0    0    0   4.3  0.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
A lovely night, mostly clear but not always photometric. Humidity was considerably lower than the last couple of weeks, but I was nervous about it before sunset and did minimal cooling before opening.  As a result, the initial focus was very high and came down more than 200 microns over the next two hours, which I was able to follow by inspecting science images.
The ARCTIC observer helped me work out some issues with the new ARCTIC sky flats script, which should be fixed quickly.
                    ------- 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
--------------------------------------------------------------------------
 20:58 arctic   800( 1607)  40  68  15.4 18.3 17.0 18.3 16.4   sdss_r  1.53
 01:22 ecamera    416(  -34)  49  29  15.1 14.3 14.9 14.1 14.1   ND3  1.33
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    64    30      7   264    (W)    348    clear     none
     17:00    63    30      5   239  (WSW)    320    clear     none
     18:00    64    30      6   237  (WSW)    333    clear     none
     19:00    63    30      1   247  (WSW)    349    clear     none
     20:00    62    30      6   209  (SSW)    363    clear     none
     21:00    60    30      4   229   (SW)    396    clear     none
     22:00    60    31      1   207  (SSW)    413    clear     none
     23:00    60    30      3   146   (SE)    409    clear     none
     00:00    59    30      1   150  (SSE)    474    clear     none
     01:00    59    30      1   264    (W)    397    clear     none
     02:00    58    30      6   347  (NNW)    482    clear     none
     03:00    57    30      3   342  (NNW)    436    clear     none
     04:00    56    30      7   345  (NNW)    450    clear     none
     05:00    55    30      9   345  (NNW)    546    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