Subject: 3.5m Night Log 20150518
From: mcmillan@apo.nmsu.edu
Date: Tue, 19 May 2015 11:26:04 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, May 18, 2015
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
M.Bentz           M.Batiste             DIS            --:--   --:--
J.Wang            P.Du                  DIS            --:--   --:--
D.Bizyaev         D.Bizyaev             DIS            03:03   05:05
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
GS01/R     20:06   21:16   0.5  0.6   0    0   0.0  0.0   0    0
IH01/R     21:16   01:10   3.9   0    0    0   0.0  0.0   0    0
NM08/R     01:10   05:53   2.7   0    0    0   2.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
We had clouds, high humidity, or threat of rain for much of the night.  Only a few light sprinkles at one point, but lots of nearby radar.  Eventually we tried opening with patchy clouds, and I struggled to get a focus or seeing measurement because the stars kept coming and going.  Seeing was somewhere around 2.5 arcsec or worse.  I let the observer try a standard, then some science exposures, and the clouds gradually improved a little although they didn't go away.
                    ------- 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
--------------------------------------------------------------------------
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp C Dewp C  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    61    27     10   179    (S)   1123  ptly cldy   none
     17:00    59    26     31   122  (ESE)   1142  ptly cldy   none
     18:00    59    30     20   139   (SE)   1170  ptly cldy   none
     19:00    57    35     25   129   (SE)   1372  ptly cldy   none
     20:00    55    40     25   126   (SE)   1484  ptly cldy   none
     21:00    52    44     23   110  (ESE)   2430  ptly cldy   none
     22:00    50    47     21   123  (ESE)   2730   cloudy    humid
     23:00    50    47     17   112  (ESE)   2972   cloudy   lt rain
     00:00    53    41     17   210  (SSW)   1995   cloudy    humid
     01:00    51    45     23   183    (S)   2594 mstly cldy  humid
     02:00    50    45     18   212  (SSW)   2791 mstly cldy  humid
     03:00    48    41     15   259    (W)   2075  ptly cldy   none
     04:00    48    28     14   280    (W)   1638  ptly cldy   none
     05:00    46    32     16   270    (W)   1854  ptly cldy   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: 1.0.4
    Current TUI version: 2.3.3