Subject: 3.5m Night Log 20190409
From: dembicky@apo.nmsu.edu
Date: Wed, 10 Apr 2019 11:59:25 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, April 09, 2019
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
S.Cheng           Y.Chiang              ECHELLE        19:37   01:05
H.Hwang           H.Hwang               ECHELLE        01:10   06:20
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
JH04/R     19:37   01:10    0    0    0    0   1.2  4.3   0    0
JH02/R     01:10   06:32    0    0    0    0   5.4  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
Lots of annoying clouds at the start of the night but the winds went below closure limits so we plugged along with observations.
I was seeing lots of vertical banding on the echelle slitview camera tonight with quite a few images black/blank/bad.  We were able to guide, but lost the star a few times, not sure if that was due to clouds or the blank fields or some combo.
The high winds never materialized over night.  We were open all night, even though we fought clouds for the first half.
I did not get an Echelle IOL in the morning since my observer was using the instruemnt for cals.
                    ------- 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
--------------------------------------------------------------------------
 20:09 ecamera    450(  140) 121  60  13.2 14.5 14.6 14.3 13.0   ND1  1.14
 01:09 ecamera    588(  136) -120  58  11.8 11.7 12.2 11.7 11.6   clear  1.30
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    61    18     19   241  (WSW)    706  ptly cldy   none
     17:00    62    18     36   243  (WSW)    670  ptly cldy   none
     18:00    60    14     14   250  (WSW)    836  ptly cldy   none
     19:00    57    11     19   262    (W)   1525  ptly cldy   none
     20:00    55    12     30   266    (W)    514  ptly cldy   none
     21:00    55    14     17   265    (W)    330  ptly cldy   none
     22:00    55    13     15   269    (W)    457  ptly cldy   none
     23:00    54    12     19   270    (W)    480 mstly clr    none
     00:00    54    12     13   263    (W)    435  ptly cldy   none
     01:00    53    13     21   265    (W)    495  ptly cldy   none
     02:00    52    14     18   256  (WSW)    636 mstly clr    none
     03:00    50    15     21   256  (WSW)    748    clear     none
     04:00    49    16     19   251  (WSW)    527    clear     none
     05:00    47    16     15   248  (WSW)    564 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