Subject: 3.5m Night Log 20200131
From: mcmillan@apo.nmsu.edu
Date: Sat,  1 Feb 2020 14:23:11 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, January 31, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU01  Z.Berta-Thompson  J.Roberts
NM09  M.Prescott        M.Prescott,K.Sanderson,A.Dijeau
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU01  DIS            17:55   02:07
NM09  ARCTIC         02:35   06:45
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU01/R      17:43  02:10    0    0    0    0   2.3  6.2   0    0
NM09/R      02:10  06:50    0    0   0.4   0   4.3  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
A lovely night, almost completely clear except for a short period of high clouds.  Seeing was good during first half and less good second half.
I had trouble with the ARCTIC filter door again, which also intersected with a filter wheel problem which would have been minor, but every time I wiggled the wheel I had to dismount the instrument in order to close the filter door, so that cost some time.
                    ------- FAILURE LOG -------
              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
NM09     R        I/H     02:10  02:35   ARCTIC filter door won't close with inst mounted
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 18:18 arctic   495(  374)  25  55  -2.2 -1.6 -1.6 -2.1 -2.2   SDSS_i  1.23
 02:43 arctic   495(  432) 138  47   2.7 -0.5 -0.1 -0.3  1.2   NMSU645  1.93
              ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    27    12      3   344  (NNW)    173    clear     none
     17:00    27     9     22   353    (N)    148    clear     none
     18:00    27     3     20    14  (NNE)     92    clear     none
     19:00    30    -2     16   359    (N)     91    clear     none
     20:00    31    -2     21    15  (NNE)     93    clear     none
     21:00    30    -1     19     9    (N)     72    clear     none
     22:00    31     2     25    13  (NNE)     66 mstly clr    none
     23:00    30    -1     31    21  (NNE)     51    clear     none
     00:00    30     0     15    16  (NNE)     73    clear     none
     01:00    29     0     14    14  (NNE)     74    clear     none
     02:00    31    -2     25    23  (NNE)     32    clear     none
     03:00    38     2     14    56   (NE)     30    clear     none
     04:00    37     2     14    61  (ENE)     39    clear     none
     05:00    37     2      5   148  (SSE)     34    clear     none
     06:00    37     1      4   173    (S)     34    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  ----------
Current TCC version: 1.2.4
Current HUB version: v20171231_01
Current TUI version: 2.6.0