Subject: 3.5m Night Log 20180501
From: dembicky@apo.nmsu.edu
Date: Wed,  2 May 2018 11:41:37 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, May 01, 2018
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
S.Tuttle          S.Tuttle              ARCTIC         22:00   01:04
K.Kinemuchi       K.Kinemuchi           ECHELLE        --:--   --:--
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW15/R     19:54   01:10   1.5  0.6   0    0   0.0  3.1   0    0
NM10/R     01:10   06:06    0   4.9   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
TCC was restarted in the afternoon.  We had to re-home the secondary mirror after the tcc restart.
We lost the first two hours to clouds and dust.
We had an agile rotator problem at 00:50.  Rot angle was +97.6 deg when the issue occured.  it failed again during the last exposure, but didn't give an error.  I noticed when I went to slew to change to the echelle that the rotator position and where it was were mismatched by about 0.7 deg.  It errored when I slewed.  Just initializing the rotator fixed the issue. I parked it at -90 deg.
I had the fans off during 1st half to keep dust inside dome down, just the press fans were left on.  I turned them on during 2nd half.
We closed at 01:30, due to clouds and possible precip to our west heading our way.
We gave up at 05:00 due to weather.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 21:11 arctic   580(  912)  42  70   9.0  9.5 10.1  9.8  9.1   SDSS_r  1.00
 22:51 NA2gdr  7579(37579) 240  56   8.5  8.5  9.8  8.5  8.5   BG40  1.00
 00:22 Echelle  554 ( )    162  62   8.3  8.1  9.3  8.1  8.1   clear  1.25
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    51     8     22   209  (SSW)   2375 mstly cldy   none
     17:00    52     8     27   229   (SW)   3164   cloudy     none
     18:00    52     7     32   221   (SW)   3087   cloudy     none
     19:00    52     7     29   212  (SSW)   3018 mstly cldy   none
     20:00    50     5     29   221   (SW)   3309  ptly cldy   dust
     21:00    49     4     18   235   (SW)   5259  ptly cldy   dust
     22:00    48     4     14   214   (SW)   4475  ptly cldy   none
     23:00    48     4     25   217   (SW)   4303  ptly cldy   none
     00:00    47     6     22   222   (SW)   3934 mstly cldy   none
     01:00    47     5     16   209  (SSW)   2918 mstly cldy   none
     02:00    47     6     15   192  (SSW)   2027   cloudy     none
     03:00    46     6     17   215   (SW)   2037   cloudy     none
     04:00    45    12     12   213  (SSW)   2286   cloudy     none
     05:00    44    11     10   212  (SSW)   2081   cloudy     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