Subject: 3.5m Night Log 20190525
From: decolib@apo.nmsu.edu
Date: Sun, 26 May 2019 12:01:54 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, May 25, 2019
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
D.DeColibus       D.DeColibus           Agile          20:06   23:06
T.Dorn-Wallenstein T.Dorn-Wallenstein   ECHELLE        23:14   00:40
G.Stringfellow    G.Stringfellow        TSPEC          00:52   05:49
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
NM02/O     20:11   23:10    0    0    0    0   3.0  0.0   0    0
UW02/R     23:10   01:10    0    0    0    0   2.0  0.0   0    0
CU06/R     01:10   05:49    0    0    0    0   0.6  4.1   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: D.DeColibus
Attempted to observe an occultation of a star by a large asteroid. The star was there, but the shadow was not. C'est la vie.
ARCSAT ran into similar issues as last night with the 'dumbbell' shaped stars.  Russet's thought is that it is a balancing issue, and noted that we apparently see similar issues around this time every year. I wonder if there's moths in the gears or something. Turning on the guider did not solve the issue.
UW05 stopped around 12:40 local.
CU06 started slightly early, at 12:52 local. Was focusing (having trouble with clouds) until 1:11 when science exposures started. Clouds continued to be an issue for the next hour or so, but were mostly just hanging on the horizon by 3 AM.
ARCSAT closed up around 2:50 since the tracking issue couldn't be solved.
The rest of the night was uneventful.
                    ------- 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
--------------------------------------------------------------------------
 19:29 AGILE      584( -765)  55  62  14.4 15.7 15.9 15.3 14.7   SDSS i  1.16
 22:23 ecamera    432(  110)  27  25  13.4 13.7 14.2 13.4 13.4   Clear  1.26
 00:11 tcamera    450( 1229)   1  33  13.6 12.9 13.4 12.6 13.0   Ks  1.62
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    65    24     28   251  (WSW)    446    clear     none
     17:00    62    25     16   212  (SSW)    442    clear     none
     18:00    64    26     25   214   (SW)    457    clear     none
     19:00    63    28     18   227   (SW)    588    clear     none
     20:00    59    26     13   225   (SW)    660    clear     none
     21:00    59    26     12   224   (SW)    701    clear     none
     22:00    58    25      6   251  (WSW)    900    clear     none
     23:00    56    20      6   266    (W)    647 mstly clr    none
     00:00    57    18      6   281    (W)    419  ptly cldy   none
     01:00    56    18      6   264    (W)    319  ptly cldy   none
     02:00    56    17      4   229   (SW)    279 mstly clr    none
     03:00    55    17      6   228   (SW)    283    clear     none
     04:00    55    18      7   260    (W)    278    clear     none
     05:00    53    18     11   219   (SW)    323    clear     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