Subject: 3.5m Night Log 20190721
From: trudyk@apo.nmsu.edu
Date: Mon, 22 Jul 2019 10:44:51 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, July 21, 2019
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
B.Ketzeback       R.McMillan, T.Rudyk   guider         20:20   23:59
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
EN02/W     20:18   06:02    0   6.0   0    0   2.9  0.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Night started with rain, which cleared out by sunset. We opened for a few hours, and did a pointing model that served both for pointing and trying to track down the slippage problem.  It was found that tracking on sky to targets in the NW produced the slipping and scalopped-shaped signal on the alt-current  on the strip charts. It also produced some motion errors.
Clouds and rain moved in around midnight, so we closed and worked on pointing model, which was implemented. Also checked scripts ofr obs3 vs obs1, email was sent detailing what we need. We did not open after midnight.
                    ------- 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
--------------------------------------------------------------------------
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    66    40     12    62  (ENE)    163 mstly cldy lt rain
     17:00    72    35      1   222   (SW)    234 mstly cldy   none
     18:00    71    37      1   235   (SW)    174  ptly cldy   none
     19:00    69    39     12   142   (SE)    347  ptly cldy   none
     20:00    67    42      9    82    (E)    398  ptly cldy   none
     21:00    65    39     13    63  (ENE)    237  ptly cldy   none
     22:00    64    38     20    64  (ENE)    175  ptly cldy   none
     23:00    62    42     24    75  (ENE)    194 mstly cldy   none
     00:00    58    45     26    75  (ENE)    362 mstly cldy   none
     01:00    57    45     28    73  (ENE)    238   cloudy     none
     02:00    58    43     29    73  (ENE)    156   cloudy   lt rain
     03:00    59    42     20    66  (ENE)    146   cloudy     none
     04:00    62    40     12    66  (ENE)    230   cloudy     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