Subject: 3.5m Night Log 20210228
From: dembicky@apo.nmsu.edu
Date: Mon,  1 Mar 2021 12:16:03 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, February 28, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS03  D.Gies            K.Shepard
CU07  J.Dexter          J.Dexter
WY01  M.Brotherton      J.McLane
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS03  ECHELLE        16:30   20:50
CU07  TSPEC          --:--   --:--
WY01  TSPEC          --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS03/R      18:08  00:10    0   3.4   0    0   1.6  1.1   0    0
CU07/R      00:10  04:42    0   4.5   0    0   0.0  0.0   0    0
WY01/R      04:42  06:22    0   1.7   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
We closed due to clouds at 20:50.  Winds started picking up shortly afterwards as well.  Gusts to 50+MPH by 23:00 as well as snow starting to fall.
I started the snow program around Midnight, but with the 55+MPH gusts I am not sure much of anything is sticking to the roof of the telescope enclosure tonight.
Just a dusting of snow on site at 04:40 but it was snowing when I checked then and lots of radar returns all around us.  I called it for the night at 04:45 with the conditions up here.
Dome parked south.
                    ------- 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
--------------------------------------------------------------------------
 18:28 ecamera    584( -540) 177  70  -0.7  0.7  0.9  0.2 -0.4   clear  1.49
 20:25 ecamera    518( -712) 113  43  -3.3 -2.0 -1.6 -2.6 -3.1   ND1  3.75
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    37     2     15   262    (W)   1096    clear     none
     17:00    35     1     12   264    (W)   1238    clear     none
     18:00    32     0      1   309   (NW)   1592 mstly clr    none
     19:00    30     0      7    88    (E)   2383  ptly cldy   none
     20:00    27     2     17    79    (E)   1275 mstly cldy   none
     21:00    27     2     22    82    (E)   1078   cloudy     none
     22:00    23     3     33    77  (ENE)          cloudy     none
     23:00    20     4     33    74  (ENE)          cloudy   lt snow
     00:00    16    12     45    70  (ENE)          cloudy   lt snow
     01:00    16    11     17    92    (E)          cloudy   lt snow
     02:00    15    11     23    68  (ENE)          cloudy   lt snow
     03:00    14    11     40    63  (ENE)          cloudy   lt snow
     04:00    15    11     29    69  (ENE)          cloudy   lt snow
     05:00    16    11     27    70  (ENE)          cloudy   lt snow
     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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