Subject: 3.5m Night Log 20210306
From: cgray@apo.nmsu.edu
Date: Sun,  7 Mar 2021 13:24:28 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, March 06, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
SU01  J.Hughes          J.Hughes
BY02  D.Ragozzine       B.Proudfoot, D.Ragozzine
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
SU01  ARCTIC         18:13   00:02
BY02  ARCTIC         00:15   06:15
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
SU01/R      18:13  00:10    0    0    0    0   6.0  0.0   0    0
BY02/R      00:10  06:15    0    0    0    0   2.3  3.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started out with clear skies and good seeing (0.98 but I forgot to hit the record button on the log). However, the winds shifted to the east and we were plagued with poor seeing for a few hours in A half. But it shifted back during B and we were able to get back to subarc seeing.
No problems tonight.
                    ------- 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
--------------------------------------------------------------------------
 20:15 arctic   529(  587) 131  48   0.1  2.1  2.8  2.2  0.9   sdss-g  2.31
 00:19 arctic   515(  475)  80  44   0.8 -0.1  0.6 -0.2  0.3   sdss-r  0.99
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    43    14     10   235   (SW)    455    clear     none
     17:00    42    12      9   214   (SW)    438    clear     none
     18:00    37    11      7    90    (E)    594    clear     none
     19:00    37    10      2   186    (S)    548    clear     none
     20:00    33     5      9   159  (SSE)    699 mstly clr    none
     21:00    33    11     14   179    (S)    831  ptly cldy   none
     22:00    34    17     11   192  (SSW)    598  ptly cldy   none
     23:00    34    17     10   225   (SW)    656 mstly clr    none
     00:00    33    18      6   187    (S)    677 mstly clr    none
     01:00    33    17     10   216   (SW)    553    clear     none
     02:00    34    17      7   207  (SSW)    485    clear     none
     03:00    34    17      1   213  (SSW)    483    clear     none
     04:00    35    15      2   236   (SW)    676    clear     none
     05:00    35    16      1   216   (SW)    855    clear     none
     06:00    34    12      6   345  (NNW)   1287    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 SOFTWARE  ----------
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Current HUB version: v20171231_01
Current TUI version: 2.6.0