Subject: 3.5m Night Log 20220430
From: mcmillan@apo.nmsu.edu
Date: Sun,  1 May 2022 12:08:52 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, April 30, 2022
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW09  S.Anderson        S.Anderson,S.Demasi
CU03  J.Stocke          J.Stocke,B.Keeney
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW09  DIS            22:40   01:00
CU03  KOSMOS         01:12   01:50
CU03  KOSMOS         03:30   05:26
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW09/R      19:53  01:10   2.8   0    0    0   2.4  0.0   0    0
CU03/R      01:10  06:07   1.7   0    0    0   3.2  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Another night with the dust hovering right near the limit for hours - in this case, mostly hovering just above the limit.  I opened for a couple of periods when the dust was a bit lower, but it was still pushing the boundaries.  High cirrus also made observations a bit more difficult, but the observers were able to get some useful data.
                    ------- 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
--------------------------------------------------------------------------
 22:45 dcamera    215(  773) 235  69  10.0 11.3 13.2 11.1 10.9   -  1.62
 01:19 kosmos   369(  980) -25  69   9.1  8.8  9.7  8.8  8.9   -  1.46
 03:32 kosmos   332(  938) -73  47   8.8  8.4  9.4  8.5  8.5   -  1.65
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    60     6     14   240  (WSW)   6857    clear     none
     17:00    59     5      9   247  (WSW)   5773    clear     none
     18:00    57     2      2   209  (SSW)   6078    clear     none
     19:00    56     5     14   190    (S)   6495    clear     dust
     20:00    51     5     13   168  (SSE)   6546 mstly clr    dust
     21:00    49     7     15   143   (SE)   6621 mstly clr    dust
     22:00    50     8     17   177    (S)   6947 mstly clr    none
     23:00    50     7     14   176    (S)   6148 mstly clr    none
     00:00    49    10     18   144   (SE)   5950 mstly clr    none
     01:00    49     9     19   147  (SSE)   5908 mstly clr    none
     02:00    48    16     19   148  (SSE)   7110 mstly clr    dust
     03:00    49    18     20   142   (SE)   6719 mstly clr    dust
     04:00    48    22     19   150  (SSE)   5826 mstly clr    none
     05:00    48    23     18   157  (SSE)   5417 mstly clr    none
     06:00    48    23     16   180    (S)   5289 mstly clr    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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