Subject: 3.5m Night Log 20180424
From: trudyk@apo.nmsu.edu
Date: Wed, 25 Apr 2018 12:08:03 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, April 24, 2018
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
J.Berdis          J.Berdis,N.Chanover   TripleSpec     20:00   23:48
N.Schneider       N.Schneider           ECHELLE        00:00   01:24
K.Schlaufman      K.Schlaufman          ECHELLE        01:36   05:51
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
NM02/R     19:49   00:00    0    0    0    0   0.0  4.2   0    0
CU03/R     00:00   01:30    0    0    0    0   0.0  1.5   0    0
JH02/R     01:30   06:14    0    0    0    0   2.2  2.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
During checkout the alt axis would not move.  Eventually had to manually move the scope up from 10 degrees to 30, then let magsensors correct. Telescope was fine after that. Symptoms consistent with 'potato chiping' of alt bearing.
Evening started partly cloudy with some rain returns on the radar, but not close enough to cause alarm. Seeing seemed okay, then immediately took a nosedive as winds shifted east.  At 01:19 ecam froze, needed a hub startNubs ecam to get it going again. Seeing improved after 01:00, but only modestly. We were open all night.
                    ------- 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
--------------------------------------------------------------------------
 20:49 tcamera    515( 1245) 105  62  11.9 16.1 15.8 16.3 13.5   -  1.89
 00:00 ecamera    317( -343)  43  64  11.7  9.8 10.2  9.4 11.1   ND3  1.72
 01:42 ecamera    389( -209) 173  46  12.4 10.6 11.4 10.7 11.3   ND4  1.23
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    64    19     17   239  (WSW)   1260  ptly cldy   none
     17:00    65    20      9   239  (WSW)   1296  ptly cldy   none
     18:00    63    20     13   268    (W)   1383  ptly cldy   none
     19:00    61    17     10   257  (WSW)   1136  ptly cldy   none
     20:00    57    13      4   190    (S)    995  ptly cldy   none
     21:00    52    23      8   127   (SE)   1403  ptly cldy   none
     22:00    53    22      3   116  (ESE)   1339  ptly cldy   none
     23:00    47    30      9    87    (E)   1536  ptly cldy   none
     00:00    54    22      6   255  (WSW)   1302 mstly clr    none
     01:00    54    15      6   254  (WSW)   1235 mstly clr    none
     02:00    54    17      7   262    (W)   1226 mstly clr    none
     03:00    53    18     10   250  (WSW)   1273 mstly clr    none
     04:00    52    21      9   237  (WSW)   1434 mstly clr    none
     05:00    49    22      7   254  (WSW)   1476 mstly clr    none
     06:00    48    25      5   187    (S)   1729 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