Subject: 3.5m Night Log 20171014
From: mcmillan@apo.nmsu.edu
Date: Sun, 15 Oct 2017 12:33:32 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, October 14, 2017
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
G.Wallerstein     G.Wallerstein         Echelle        18:35   21:35
C.Pilachowski     C.Pilachowski         ECHELLE        21:35   00:45
C.Kolobow         C.Kolobow             ARCTIC         00:50   05:58
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW03/R     18:39   21:39    0    0    0    0   3.0  0.0   0    0
DD02/R     21:39   01:10    0    0    0    0   3.5  0.0   0    0
JH07/R     01:10   06:59    0    0   0.4   0   1.4  4.1   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
It was clear or mostly clear all night, but the seeing varied from 0.8" at the beginning of the night to 3.5" in second half as a cold front moved in from the east.
Everything worked all right, except that the ARCTIC observer reported extra reflections in the g filter which were not showing up in the r filter.  I thought the filter might be in backwards, and when I inspected it that appeared to be true, so I flipped it around.   There were some complications in this process which took extra time, and then it turned out the reflections still showed up anyway.  So I'm not sure exactly what the cause was, but I thought it was most appropriate to list the time as equipment trouble.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
JH07    R        I/H      01:43  02:05   Filter struggles
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 18:46 ecamera    469                                          ND3   0.81
 21:39 ecamera    247( -201)  29  37  13.8 13.4 13.9 13.2 13.8   ND3  1.27
 01:12 arctic   430(  907)  40  55  12.4 12.2 12.8 12.2 12.4   SDSS_r  1.00
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    62    38     16   263    (W)    328    clear     none
     17:00    62    38     10   274    (W)    351    clear     none
     18:00    61    38      8   266    (W)    385    clear     none
     19:00    58    36      5   263    (W)    470    clear     none
     20:00    58    34      2   163  (SSE)    390    clear     none
     21:00    56    33      1   146   (SE)    450    clear     none
     22:00    56    31      2   177    (S)    378    clear     none
     23:00    56    30      3   124   (SE)    480    clear     none
     00:00    55    24     13    84    (E)    298    clear     none
     01:00    54    21     11    91    (E)    272 mstly clr    none
     02:00    49    22     26    71  (ENE)    328    clear     none
     03:00    47    20     17    78  (ENE)    535 mstly clr    none
     04:00    41    21     24    77  (ENE)   1635 mstly clr    none
     05:00    39    22     18    73  (ENE)   2085 mstly clr    none
     06:00    37    22     16    78  (ENE)   1759 mstly clr    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 STATUS
    Telescope drives operational. Current TCC version: 1.2.4
    Current TUI version: 2.6.0