Subject: 3.5m Night Log 20181020
From: cgray@apo.nmsu.edu
Date: Sun, 21 Oct 2018 12:09:39 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, October 20, 2018
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
B.Bolin           B.Bolin               NICFPS         --:--   --:--
B.Benjamin        A.Aarnio              Echelle        01:56   03:27
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW04/R     18:33   01:10   0.0  6.6   0    0    0    0    0    0
CU04/R     01:10   07:04   2.8  1.6   0    0    0   1.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Not a good night.
The dataq needed a hard reboot during checkout.
Humidity and clouds nearly all night. While we did technically open during A half, I wrote that it was weathered out.  I attempted to focus on a mag 3 star and it was only occasionally above the noise. UW04 was not able to see their target at all and we gave up.
The humidity dropped, though the clouds remained, during B half and we were able to open for about 1.5 hrs.  However, fog came up on us fast and I underestimated it.  The mirror was misted.  I left the mirror covers open with the dome closed with a hope that the droplets would more easily evaporate. After about an hour everything evaporated and looked normal. :/
                    ------- 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
--------------------------------------------------------------------------
 01:50 ecamera    695( -272) 154  69   4.9  4.5  5.1  4.5  4.8   --  2.07
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    48    33     12    72  (ENE)      6 mstly cldy   none
     17:00    44    33     20    72  (ENE)     15 mstly cldy   none
     18:00    41    33     22    74  (ENE)     37  ptly cldy  humid
     19:00    40    34     17    77  (ENE)          cloudy    humid
     20:00    39    35     23    78  (ENE)          cloudy    humid
     21:00    39    34     17    85    (E)        mstly clr   humid
     22:00    38    36     17    85    (E)        mstly clr   humid
     23:00    39    36     14    76  (ENE)         ptly cldy  humid
     00:00    40    37     13   113  (ESE)         ptly cldy  humid
     01:00    41    35     11    97    (E)         ptly cldy  humid
     02:00    40    35     14   117  (ESE)         ptly cldy  humid
     03:00    41    32     20   136   (SE)      2   cloudy     fog
     04:00    41    37     13   135   (SE)        mstly cldy   fog
     05:00    40    33     14   111  (ESE)        mstly cldy  humid
     06:00    41    33     19   133   (SE)      3 mstly cldy  humid
     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