Subject: 3.5m Night Log 20240709
From: cgray@apo.nmsu.edu
Date: Wed, 10 Jul 2024 10:25:37 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, July 09, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
AV01  A.Verbiscer       A.Verbiscer
GS01  D.Michael         M.Crenshaw and class
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
AV01  ARCTIC         --:--   --:--
GS01  KOSMOS         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
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AV01/R      20:23  01:10  2.1  2.7   0    0    0    0    0    0
GS01/R      01:10  05:55  4.8  0.0   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started with an intense storm and produced very little rain, but lots of dust!! Particle counts went up to 60K and winds were reaching 35mph. While the dust and wind calmed down, there were still radar returns and danger clouds around us. About the time it looked like it would clear, another storm came screaming from the north bringing more particles and a lot of humidity, but no rain. Things were only getting worse as the night progressed and we called it at 4:30am.
No problems tonight.
                    ------- FAILURE LOG -------
              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
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            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
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               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    64    39     12    90    (E)    914  ptly cldy   none
     17:00    73    39     14   211  (SSW)   1503  ptly cldy   none
     18:00    68    39     12   216   (SW)   1451  ptly cldy   dust
     19:00    57    44     15     1    (N)  55614   cloudy   lt rain
     20:00    56    44      6   312   (NW)  16498   cloudy   lt rain
     21:00    61    39     14   172    (S)   2041   cloudy     none
     22:00    61    34     10   127   (SE)    869 mstly cldy   none
     23:00    62    38     15   142   (SE)   1570 mstly cldy   none
     00:00    61    40     15   133   (SE)   2181  ptly cldy   none
     01:00    58    41     18    87    (E)   2129 mstly clr    dust
     02:00    55    42     15    85    (E)   5092 mstly clr    dust
     03:00    51    45     15    90    (E)   5256    clear     dust
     04:00    50    47     12    84    (E)   4397    clear    humid
     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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