Subject: 3.5m Night Log 20210513
From: cgray@apo.nmsu.edu
Date: Fri, 14 May 2021 11:20:49 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, May 13, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM01  K.Sanderson       K.Sanderson
BY01  B.Boizelle        B.Boizelle
NM07  D.Bizyaev         D.Bizyaev
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM01  DIS            21:43   01:05
BY01  TSPEC          01:16   02:32
NM07  ARCTIC         02:49   05:13
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM01/R      20:03  01:10    0   1.7   0    0   3.2  0.2   0    0
BY01/R      01:10  02:40    0    0    0    0   1.5  0.0   0    0
NM07/R      02:40  05:56    0    0    0    0   3.3  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
We were not able to open on time tonight because of a thunderstorm that kicked up a haboob! I sent out pictures. It was wild! But once the dust and wind died down we were able to open without problem with just some high clouds. Seeing was....about as good as you might expect.
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
--------------------------------------------------------------------------
 21:49 dcamera    300(  690)  90  58   9.2 13.2 13.7 13.0 10.4   --  1.94
 01:21 tcamera    494( 1091) 215  61   9.8  9.5 10.1  9.7  9.7   MKs  1.30
 02:53 dcamera    547(  787) 273  26   9.8  9.4  9.9  9.4  9.6   --  2.03
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    62    29      6   253  (WSW)   1346 mstly clr    none
     17:00    67    31     14   206  (SSW)   1271 mstly clr    none
     18:00    62    32      7   237  (WSW)   1270 mstly clr    none
     19:00    60    28     10   262    (W)   1357  ptly cldy   dust
     20:00    55    31     11   186    (S)   1118  ptly cldy   dust
     21:00    49    32     21   145   (SE)        mstly clr    dust
     22:00    49    32     24   141   (SE)   2732 mstly clr    none
     23:00    48    31     24   137   (SE)   1504 mstly clr    none
     00:00    49    31     25   148  (SSE)    892 mstly clr    none
     01:00    51    31     17   161  (SSE)    722 mstly clr    none
     02:00    50    31     20   156  (SSE)    775    clear     none
     03:00    49    31     10   187    (S)    974    clear     none
     04:00    50    31     14   213  (SSW)    765    clear     none
     05:00    49    31      7   192  (SSW)    789    clear     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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