Subject: 3.5m Night Log 20250507
From: cgray@apo.nmsu.edu
Date: Thu,  8 May 2025 12:29:24 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, May 07, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU03  Z.Berta-Thompson  A.Stephens
NM10  W.Roberson        A.Smith, A.Abbas
BY04  S.Call            S.Call
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU03  KOSMOS         21:38   23:56
NM10  ECHELLE        --:--   --:--
BY04  TripleSpec     --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU03/R      19:58  01:10    0   2.5   0    0   0.0  2.7   0    0
NM10/R      01:10  04:30   0.5  2.9   0    0    0    0    0    0
BY04/R      04:30  06:01   1.5  0.0   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Another crazy weather day. We started with clouds and virga, but no actual rain. Things cleared up enough to open after 9pm but seeing was TERRIBLE!!! Then wind shifts, humidity roller coaster, clouds, more humidity, and finally radar returns. We closed at midnight and were not able to reopen.
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
--------------------------------------------------------------------------
 21:55 kosmos   235(  871)  55  73   3.9  7.3  7.4  7.5  4.5   clear  3.53
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    53    22     10   270    (W)    969  ptly cldy   none
     17:00    54    21     13   264    (W)   1105  ptly cldy   none
     18:00    51    22      8   265    (W)   1054  ptly cldy   none
     19:00    53    20      9   236   (SW)   1029  ptly cldy   none
     20:00    47    22     10   135   (SE)   1241  ptly cldy   none
     21:00    42    32      9   116  (ESE)    711 mstly clr   humid
     22:00    39    33     14    80    (E)        mstly cldy   none
     23:00    39    33     13    87    (E)          cloudy    humid
     00:00    38    33     18    89    (E)          cloudy    humid
     01:00    39    32     20    72  (ENE)          cloudy    humid
     02:00    38    32     16    82    (E)          cloudy    humid
     03:00    44    26      5   259    (W)   1279   cloudy    humid
     04:00    36    31      7   104  (ESE)        mstly clr   humid
     05:00    38    32     10   160  (SSE)        mstly clr   humid
     06:00    42    31     16   160  (SSE)   1646 mstly clr   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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