Subject: 3.5m Night Log 20240401
From: cgray@apo.nmsu.edu
Date: Tue,  2 Apr 2024 11:17:11 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, April 01, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS01  D.Michael         M.Crenshaw
CU02  K.France          Y.Notsu
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS01  KOSMOS         --:--   --:--
CU02  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS01/R      19:32  01:10  5.6  0.0   0    0    0    0    0    0
CU02/R      01:10  06:41  1.6  3.9   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
No hope of opening tonight. We had solid clouds with light snow on and off. Then fog. When things did clear a little after midnight it was high humidity. I decided to call it once the clouds started rolling back in with radar returns around 5am. The snow program ran all night and I don't think we had more than an inch of new accumulation. I parked the dome to the southwest as there's a good chance of some new snow tomorrow.
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
--------------------------------------------------------------------------
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    27    26     23   272    (W)          cloudy    humid
     17:00    26    26     23   269    (W)          cloudy    humid
     18:00    27    26     33   262    (W)          cloudy    humid
     19:00    27    24     24   255  (WSW)          cloudy     none
     20:00    27    25     14   246  (WSW)          cloudy     none
     21:00    26    26     15   214   (SW)          cloudy   lt rain
     22:00    26    25     15   232   (SW)          cloudy   lt snow
     23:00    26    24      8   288  (WNW)          cloudy   lt snow
     00:00    25    24      8   322   (NW)        mstly cldy  humid
     01:00    25    24      9   278    (W)           clear    humid
     02:00    25    22     12   313   (NW)           clear    humid
     03:00    25    24     13   357    (N)           clear    humid
     04:00    25    25     16    34   (NE)           clear    humid
     05:00    25    20     12    42   (NE)         ptly cldy  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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