Subject: 3.5m Night Log 20190224
From: cgray@apo.nmsu.edu
Date: Mon, 25 Feb 2019 13:32:28 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, February 24, 2019
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
B.Bolin           B.Bolin               ARCTIC         18:45   00:06
M.Brotherton      A.Cavanaugh           TSPEC          00:24   06:20
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW15/R     18:05   00:10    0    0   0.7   0   4.9  0.5   0    0
WY02/R     00:10   06:27    0    0    0    0   0.0  6.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
We started the night with some shutter issues from Arctic.  All the exposures looked good during checkout but when we went on sky things were saturated.  Russet pointed me to the shutter which turned out to be the problem. Review of the calibration images showed that they were all bad. Once the shutter was reset the rest of the night was good.
We had high thin clouds most of the night but were compensated with good seeing.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
UW15    R        I/H      17:48  18:45    Shutter failure
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 18:57 arctic   745(  662)  79  63   1.1  1.4  2.2  1.4  1.1   sdss-g  1.69
 20:55 arctic   745(  662)  58  28   1.4  0.8  1.6  0.8  1.1   sdss-r  2.29
 22:08 arctic   810(  725)  41  40   2.1  1.0  1.7  1.3  1.8   sdss-r  1.08
 22:54 arctic   814(  734)  27  45   1.9  1.1  1.9  1.5  1.8   sdss-r  0.92
 22:54 arctic   814(  734)  27  45   1.9  1.1  1.9  1.5  1.8   sdss-r  0.92
 00:35 tcamera    879(  855) -160  33   1.4  1.1  1.8  1.4  1.4   Ks  0.94
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    39     4     16   193  (SSW)    329 mstly clr    none
     17:00    37     7     14   202  (SSW)    321 mstly clr    none
     18:00    34     5      8   171    (S)    362 mstly clr    none
     19:00    34     2     10   180    (S)    364 mstly clr    none
     20:00    35    -4     19   182    (S)    373  ptly cldy   none
     21:00    36    -1     17   177    (S)    327  ptly cldy   none
     22:00    35    -3     16   183    (S)    256  ptly cldy   none
     23:00    36    -1     19   194  (SSW)    373  ptly cldy   none
     00:00    35     1     19   201  (SSW)    258  ptly cldy   none
     01:00    34     0     18   205  (SSW)    341 mstly clr    none
     02:00    35     0     17   208  (SSW)    305 mstly clr    none
     03:00    34     3     16   209  (SSW)    382 mstly clr    none
     04:00    34     5     17   216   (SW)    363    clear     none
     05:00    34     4     15   219   (SW)    367    clear     none
     06:00    33     5     17   241  (WSW)    419    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