Subject: 3.5m Night Log 20190726
From: decolib@apo.nmsu.edu
Date: Sat, 27 Jul 2019 11:53:44 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, July 26, 2019
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
M.Brewer          H.Lewis               ARCTIC         21:08   00:50
M.Brewer          H.Lewis               ARCTIC         01:50   05:15
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UV01/R     20:15   01:10    1.1  0    0    0   3.8  0.0   0    0
UV01/R     01:10   06:05    0.7  0    0    0   0.1  4.2   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: D.DeColibus
Mostly cloudy during the evening and first part of A half. Dust spikes and borderline humidity, plus nearby radar returns, kept us from opening until 9:05 PM. The sky cleared fairly quickly at around 9:30 PM, and stayed clear for about an hour.
Clouds came back with a vengeance by 10:45 and continued to be an issue.
Closed at 12:50 due to light precipitation forming nearby in the south, and clouds starting to form over us that carried the threat of rain. We reopened an hour later at 1:50 AM, and stayed open the rest of the night. The observer closed up around morning twilight.
No problems tonight.
                    ------- 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
--------------------------------------------------------------------------
 21:21 arctic    93( 1142) 102  17  17.7 20.4 20.3 20.2 18.1   SDSS r  2.66
 22:25 arctic   318( 1239)  94  30  16.7 17.9 18.3 17.2 17.0   SDSS r  1.34
 01:57 arctic   305( 1128)  43  72  16.6 16.6 17.0 16.6 16.4   SDSS g  0.97
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    70    42      5   266    (W)    347  ptly cldy   none
     17:00    69    43      4   111  (ESE)    348 mstly cldy   none
     18:00    70    41      1   233   (SW)    312 mstly cldy   none
     19:00    69    43      3   255  (WSW)    313 mstly cldy   none
     20:00    65    45      5   353    (N)   2567 mstly cldy   dust
     21:00    64    45     10   128   (SE)   1967 mstly clr    none
     22:00    62    37     10   117  (ESE)    709  ptly cldy   none
     23:00    62    34      7   113  (ESE)    619 mstly cldy   none
     00:00    64    42      5    57  (ENE)    805  ptly cldy   none
     01:00    62    38      3   261    (W)    694 mstly cldy   none
     02:00    62    37      1   259    (W)    590  ptly cldy   none
     03:00    62    35      2   206  (SSW)    586  ptly cldy   none
     04:00    60    35      3   178    (S)    592  ptly cldy   none
     05:00    61    34      5   111  (ESE)    565  ptly cldy   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