Subject: 3.5m Night Log 20190524
From: cgray@apo.nmsu.edu
Date: Sat, 25 May 2019 12:20:06 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, May 24, 2019
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
M.Bentz           C.Roberts             DIS            20:10   01:08
C.Kobulnicky      C.Kobulnicky          DIS            02:16   05:22
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
GS03/R     20:10   01:10    0    0    0    0   4.9  0.1   0    0
WY01/R     01:10   05:50    0    0    0   1.0  0.0  3.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Tonight was a fantastically painful night which could have been avoided.  WY01 requested slits 0.9, 1.2, 1.5 but 1.2 was not loaded in the slit wheel and I didn't catch my error until switch over.  In the panic of trying to change the slit while also changing gratings settings, I forgot to check the wavelength centers. We didn't find out until after several exposures that the turret did not home properly. By the time everything was corrected, I'd lost our user an hour on sky.
The sky was clear at sunset but clouds started rolling in around 10pm and we had high clouds for most of the night. Seeing was good to moderate.  There was a lot of moth material on the drives but no issues with tracking.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
WY01      D            I/H        01:16     02:16      slit not installed, turret motion error
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 00:21 ecamera    477( -163) 116  58   8.8  8.0  8.7  7.9  8.2   clear  1.02
 19:55 dcamera    487(  970)  48  79  12.1 13.5 13.3 13.3 12.0   --  1.20
 21:58 dcamera    539(  960) -73  70  12.9 12.2 12.6 12.1 12.6   --  0.97
 00:41 dcamera    509(  913) 118  45  11.4 11.6 12.2 11.7 11.5   --  1.36
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    61    18     17   233   (SW)    553    clear     none
     17:00    62    18     20   217   (SW)    554    clear     none
     18:00    59    17     21   214   (SW)    504    clear     none
     19:00    58    18     20   218   (SW)    556    clear     none
     20:00    54    17     15   224   (SW)    508    clear     none
     21:00    53    17      8   192  (SSW)    645 mstly clr    none
     22:00    53    18      9   193  (SSW)    605  ptly cldy   none
     23:00    55    18     14   186    (S)    725 mstly cldy   none
     00:00    55    19     15   227   (SW)    728 mstly cldy   none
     01:00    54    19     11   262    (W)    780 mstly clr    none
     02:00    51    18      7   224   (SW)    628 mstly clr    none
     03:00    52    18      6   259    (W)    663 mstly clr    none
     04:00    52    16      6   257  (WSW)    531 mstly clr    none
     05:00    52    15      6   260    (W)    618 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