Subject: 3.5m Night Log 20210915
From: cgray@apo.nmsu.edu
Date: Thu, 16 Sep 2021 12:47:23 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, September 15, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU04  Y.Notsu           Y.Notsu
JH06  N.Dello           A.McKay
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU04  ECHELLE        00:00   01:10
JH06  ECHELLE        01:10   06:02
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU04/R      19:17  01:10    0   4.7   0    0   0.0  1.2   0    0
JH06/R      01:10  06:39    0    0    0    0   4.5  1.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started with thunderstorms coming our way and we were not able to open until midnight. However, once we did open, the seeing was amazing!! A few clouds here and there until dawn.
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
--------------------------------------------------------------------------
 00:06 ecamera    323(  174) 243  48  16.2 14.7 14.6 14.6 15.8   Clear  1.04
 01:24 ecamera    383(  244) 306  71  16.1 15.2 15.6 15.3 15.5   ND3  0.63
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    66    45     15   219   (SW)   1494  ptly cldy   none
     17:00    61    40      7    92    (E)    996  ptly cldy   none
     18:00    61    38     13    84    (E)    954  ptly cldy   none
     19:00    56    43     16    76  (ENE)   1274  ptly cldy   none
     20:00    57    39      5   133   (SE)   1017 mstly cldy   rain
     21:00    56    41     12   190    (S)   1452   cloudy     rain
     22:00    56    41     14   137   (SE)   1628   cloudy   lt rain
     23:00    56    37      8    96    (E)   1287   cloudy     none
     00:00    62    33     10   317   (NW)   1006  ptly cldy   none
     01:00    61    37      9   271    (W)   1335 mstly clr    none
     02:00    60    36      9   266    (W)   1233 mstly clr    none
     03:00    58    36      9   249  (WSW)   1065    clear     none
     04:00    57    35      7   261    (W)    889    clear     none
     05:00    58    35      7   236   (SW)    828    clear     none
     06:00    57    40      6   241  (WSW)   1204    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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