Subject: 3.5m Night Log 20180220
From: dembicky@apo.nmsu.edu
Date: Wed, 21 Feb 2018 12:34:38 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, February 20, 2018
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
S.Hawley      G.Stefansson, S.Mahadevan ARCTIC         21:02   00:00
A.Matthews        A.Matthews            DIS            00:15   02:10
A.Matthews        A.Matthews            DIS            03:10   05:10
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW01/R     18:02   00:10    0    0    0    0   1.4  4.7   0    0
UV01/R     00:10   06:32   2.4   0    0    0   4.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
I needed to reboot the echelle ICC during checkout to get things to respond.
I added to the observing specialist checkout script a ARCTIC filter wheel home option, so the filter wheel will now be homed during our checkout proceedure.
We had clouds, then high humidity, which kept us closed until around 21:00.  Since they were already into their transit and using the diffuser, I just roughly focues the instrument for them.
We flirted with humidity all night long, clouds got a little too thick to see any stars in the guider for about an hour around 02:00.  We didn't close but effectively were being clouded out during that time. so I reported it as weather loss.
We closed again at 05:10 as the clouds got too thick and the humidity finally went over the limit as well.
                    ------- 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
--------------------------------------------------------------------------
 01:07 dcamera    482(  111)  -9  40  -1.7 -1.7 -1.1 -1.6 -1.6   --  1.80
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    31    26     14   245  (WSW)        mstly cldy   none
     17:00    33    27     13   266    (W)         ptly cldy  humid
     18:00    30    26     14   223   (SW)        mstly clr   humid
     19:00    30    26      8   226   (SW)        mstly clr   humid
     20:00    29    27      9   272    (W)   1557 mstly clr   humid
     21:00    30    25     13   262    (W)           clear     none
     22:00    31    24      9   266    (W)           clear     none
     23:00    30    24     11   256  (WSW)           clear     none
     00:00    30    24      5   265    (W)   1026  ptly cldy   none
     01:00    29    24      7   267    (W)    914  ptly cldy   none
     02:00    29    24      6    86    (E)        mstly cldy   none
     03:00    30    24     11   183    (S)        mstly cldy   none
     04:00    29    24     11   214   (SW)        mstly cldy   none
     05:00    29    24     14   205  (SSW)    987 mstly cldy  humid
     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