Subject: 3.5m Night Log 20240824
From: tsutherland@apo.nmsu.edu
Date: Sun, 25 Aug 2024 12:09:46 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, August 24, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
EN02  B.Ketzeback       T.Sutherland,C.Gray,R.McMillan
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN02  Arctic         20:00   20:50
EN02  Dis            03:40   06:00
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
EN02/W      19:46  06:25   5.5  2.4   0    0    0   2.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland
We opened for about 50 minutes at the start of the night for ventilation and cooling, but did not have time to complete the tasks before radar moved in.
Arctic quad that dropped yesterday was recovered. We tried with the instrument at 196K with ambient temp of 21C, and we tried about 7 times to recover with no avail. Once the instrument temp reached 200C, we tried again and recovered the quad on the first try (with ambient temp of 19C). The ion pump was at 10e-6.
Dis contamination was checked, Russet to analyze.
Nicfips warmed a couple times because Torrie did fills incorrectly. Instrument is fine and Torrie now knows more or less what they are doing.
Lowered the echelle cal mirror, so we can use ecam for pointing now.
Pointing Model done with 100 points
                    ------- FAILURE LOG -------
              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 03:49 NA2gdr   378(30378) 141  66  14.8 15.7 17.7 15.5 15.0   B  1.66
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    77    41     23   214   (SW)   1131 mstly clr    none
     17:00    77    41     23   209  (SSW)    940 mstly clr    none
     18:00    71    36     23   216   (SW)    725 mstly clr    none
     19:00    73    37     14   237  (WSW)    947  ptly cldy lt rain
     20:00    67    37     13   226   (SW)   1003 mstly clr    none
     21:00    66    39     13   217   (SW)   1097 mstly cldy   dust
     22:00    62    43     22   112  (ESE)    985   cloudy     rain
     23:00    62    43      2   143   (SE)   1076   cloudy     none
     00:00    60    44     11   170    (S)   6685   cloudy     rain
     01:00    54    48     12   113  (ESE)    976   cloudy     none
     02:00    60    48     22   134   (SE)   1413   cloudy     none
     03:00    59    45     19   123  (ESE)   1195    clear     none
     04:00    58    46     20   122  (ESE)   1098    clear     none
     05:00    59    47     22   124   (SE)   1240    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.
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