Subject: 3.5m Night Log 20180514
From: mcmillan@apo.nmsu.edu
Date: Tue, 15 May 2018 11:55:59 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, May 14, 2018
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
P.Szkody          P.Szkody              DIS            20:20   01:10
N.Schneider       C.Schmidt             DIS            01:25   04:25
N.Schneider       C.Schmidt             ECHELLE        04:30   05:45
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW13/R     20:03   01:10    0    0    0    0   5.1  0.0   0    0
CU04/R     01:10   05:56    0    0    0    0   4.8  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
We had a few stray clouds passing through at the beginning of the night, but after that it was nice and clear with moderate seeing.  Slitviewer noise caused the observer to stick to brighter targets, and the blue side scattered light was also a problem but not a show-stopper.
For the second half program, about half an hour was lost to a masking tape malfunction causing a special ND mask to come loose.  After some consideration, I decided this shouldn't count as EQUIP time because it's for a special instrument setup and not regular observatory equipment - but it is sort of a borderline case.  Once the masking tape problem was resolved all went well and the observations were very successful.
                    ------- 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
--------------------------------------------------------------------------
 20:29 dcamera    643( 1147) 196  79  14.2 15.8 15.3 15.7 14.2   -  1.27
 01:34 dcamera    366(  715) 108  55  13.3 12.7 13.3 12.6 12.7   -  1.16
 04:46 ecamera    300( -202) -62  12  12.1 11.8 12.5 11.9 12.0   ND3  1.67
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    62    20     21   262    (W)    606 mstly clr    none
     17:00    63    21     14   263    (W)    657 mstly clr    none
     18:00    63    20     26   253  (WSW)    785 mstly clr    none
     19:00    62    20     21   253  (WSW)    666 mstly clr    none
     20:00    58    20     13   257  (WSW)    736  ptly cldy   none
     21:00    57    21     12   245  (WSW)    863  ptly cldy   none
     22:00    57    21     15   267    (W)    723    clear     none
     23:00    57    21     10   245  (WSW)    697    clear     none
     00:00    56    21      9   259    (W)    812    clear     none
     01:00    56    21      8   262    (W)    924    clear     none
     02:00    56    20      8   270    (W)    904    clear     none
     03:00    55    19     10   289  (WNW)   1203    clear     none
     04:00    54    20     13   302  (WNW)   1571    clear     none
     05:00    53    20     16   306   (NW)    860    clear     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