Subject: 3.5m Night Log 20191013
From: trudyk@apo.nmsu.edu
Date: Mon, 14 Oct 2019 12:38:01 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, October 13, 2019
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS03  S.Lepine          N.Hejazi
GS02  D.Gies            K.Lester
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS03  ECHELLE        18:44   01:10
GS02  ECHELLE        01:10   06:30
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS03/R      18:41  01:10    0    0    0    0   0.1  6.3   0    0
GS02/R      01:10  06:58    0    0    0    0   0.0  5.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Evening started with high thin clouds. Seeing was excellent, clouds came and went. Starting around 01:00 a thick ridge of clouds began moving in, and humidity started to rise. Fortunately, it only remained borderline, and started to drop again around 04:00.  It cleared up a bit around 06:00 but humidity began to rise again. We were open all night.
                    ------- FAILURE LOG -------
              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 18:50 ecamera    451( -159)  57  64   9.3 11.5 10.7 11.0  9.9   ND4  0.66
 19:37 ecamera    331( -326) 100  54   8.6 10.4 10.1 10.1  9.0   clear  1.31
 20:30 ecamera    328( -391)  96  65   8.4  9.1  9.3  8.7  8.4   clear  0.95
 01:14 ecamera    411( -385) -61  67   7.9  7.6  8.2  7.5  7.6   clear  0.85
 03:54 ecamera    371( -445) 214  47   8.2  6.9  7.4  6.8  7.1   clear  1.05
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    57    22      8   289  (WNW)         ptly cldy   none
     17:00    52    22      7   260    (W)         ptly cldy   none
     18:00    50    25      5   202  (SSW)         ptly cldy   none
     19:00    49    22      1   194  (SSW)         ptly cldy   none
     20:00    47    26      9   182    (S)         ptly cldy   none
     21:00    48    28      8   182    (S)         ptly cldy   none
     22:00    48    28     10   186    (S)         ptly cldy   none
     23:00    48    28     11   195  (SSW)         ptly cldy   none
     00:00    47    31     13   182    (S)         ptly cldy   none
     01:00    46    32     14   184    (S)         ptly cldy   none
     02:00    46    32      9   182    (S)         ptly cldy   none
     03:00    45    32      4   187    (S)         ptly cldy   none
     04:00    47    31      6   246  (WSW)         ptly cldy   none
     05:00    44    30      2   249  (WSW)         ptly cldy   none
     06:00    46    31      7   268    (W)        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.
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