Subject: 3.5m Night Log 20210419
From: mcmillan@apo.nmsu.edu
Date: Tue, 20 Apr 2021 12:06:35 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, April 19, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
FG01  D.Buzasi          D.Buzasi
WY01  J.McLane          J.McLane
NM03  A.Hedlund         P.Gaulme
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
FG01  ECHELLE        19:50   01:03
WY01  TSPEC          01:07   02:37
NM03  ECHELLE        02:41   05:35
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
FG01/R      19:45  01:10    0    0    0    0   0.0  5.4   0    0
WY01/R      01:10  02:40    0    0    0    0   0.1  1.4   0    0
NM03/R      02:40  06:19    0    0    0    0   3.6  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
A peaceful and productive night.  Very good seeing at the beginning of the night, not so good during second half, but nice and photometric for all the spectroscopic observations.
                    ------- 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
--------------------------------------------------------------------------
 19:54 ecamera    582( -291)  31  72   4.4  6.0  5.7  5.6  4.6   ND2  0.70
 01:15 tcamera    470(  766) 185  69   3.4  3.2  3.8  3.2  3.2   Ks  1.05
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    43    15     10   262    (W)    891    clear     none
     17:00    44    15     16   288  (WNW)    884    clear     none
     18:00    45    16     16   251  (WSW)    880    clear     none
     19:00    44    14     10   270    (W)    902    clear     none
     20:00    40    15      9   268    (W)    987    clear     none
     21:00    40    17     12   260    (W)    939    clear     none
     22:00    39    19     11   222   (SW)    915    clear     none
     23:00    39    20     16   232   (SW)   1009    clear     none
     00:00    39    20     14   240  (WSW)   1063    clear     none
     01:00    38    21     15   228   (SW)   1159    clear     none
     02:00    39    20     13   265    (W)   1231    clear     none
     03:00    38    19     12   265    (W)   1180    clear     none
     04:00    40    18     12   267    (W)   1146    clear     none
     05:00    39    17      9   264    (W)   1068    clear     none
     06:00    38    17      7   257  (WSW)   1092    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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