Subject: 3.5m Night Log 20191006
From: decolib@apo.nmsu.edu
Date: Mon,  7 Oct 2019 12:16:58 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, October 06, 2019
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW14  G.Wallerstein     I.Farrell
OU01  J.Wisniewski      J.Wisniewski,G.Stefansson
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW14  DIS            18:50   22:36
OU01  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP      OBS     NOT USED
 I/ROW/DTN  START  FINISH    D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW14/R      18:50  01:10    0    2.5  0    0   0.0  3.8   0    0
OU01/R      01:10  06:53    5.5  0.2  0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: D.DeColibus
Night started off clear, with some light cirrus. We had another altitude motion error during checkout (at 17:51), in a slew from 104,10 to 175,80, with the error at 68.8 degrees.
Despite the relatively clear sky, the seeing was pretty awful and the humidity and wind climbed until we had to close due to humid conditions at 22:36. Fog formed over us not long afterwards, and we didn't open for the rest of the night.
The B half observer gave up at 5:55 AM, as we had missed their transit and twilight was approaching.
                    ------- FAILURE LOG -------
              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
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            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 19:15 dcamera    537( 1010)  20  41  12.2 14.7 14.6 14.1 12.4   --  2.16
 20:04 dcamera    352(  722)  38  50  12.2 12.6 13.1 12.1 10.9   --  2.76
            --------------- WEATHER LOG ---------------                            Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00                  7   325   (NW)        mstly clr    none
     17:00                 13    25  (NNE)        mstly clr    none
     18:00                  4   106  (ESE)        mstly clr    none
     19:00                 11    87    (E)        mstly clr    none
     20:00                 23    75  (ENE)        mstly clr    none
     21:00                 19    78  (ENE)        mstly clr   humid
     22:00                 17    80    (E)        mstly clr   humid
     23:00                 22    75  (ENE)        mstly clr    fog
     00:00                 25    75  (ENE)        mstly clr    fog
     01:00                 14    72  (ENE)        mstly clr    fog
     02:00                 14    88    (E)        mstly clr   humid
     03:00                 17    78  (ENE)        mstly clr   humid
     04:00                 11    81    (E)        mstly clr   humid
     05:00                 11    89    (E)        mstly clr   humid
     06:00                 12    83    (E)        mstly clr   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 SOFTWARE  ----------
Current TCC version: 1.2.4
Current HUB version: v20171231_01
Current TUI version: 2.6.0