Subject: 3.5m Night Log 20220317
From: cgray@apo.nmsu.edu
Date: Fri, 18 Mar 2022 12:17:07 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, March 17, 2022
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
WY01  M.Brotherton      J.McLane
UV01  S.Majewski        R.Wilson
AP02  S.Merkowitz       R.McMillan
NM05  A.Hedlund         P.Gaulme
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY01  TSPEC          19:21   20:37
UV01  ARCTIC         20:49   22:18
AP02  APOLLO         --:--   --:--
NM05  Echelle        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY01/R      19:21  20:51    0    0    0    0   0.0  1.5   0    0
UV01/R      20:51  01:30    0   3.1   0    0   0.0  1.5   0    0
AP02/R      01:30  02:40   0.0  1.2   0    0    0    0    0    0
NM05/R      02:40  07:01    0   4.7   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Things started out good...and then were destroyed. Seeing was good along with clear skies but dust started picking up around 8pm. But 8:30 we had to shut down. Dust stayed very high all night and we were not able to reopen.
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
--------------------------------------------------------------------------
 18:26 tcamera    502(  982) -34  59   1.1  1.7  2.7  2.1  1.7   Ks  1.28
 21:00 arctic   347(  622)  77  56   0.4  0.5  1.3  0.4  0.6   Semrock  1.26
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    35    14     17   319   (NW)    880 mstly clr    none
     17:00    36    11     18   336  (NNW)    770 mstly clr    none
     18:00    37     9      4   324   (NW)    749 mstly clr    none
     19:00    35     8     13   321   (NW)    793 mstly clr    none
     20:00    34     7      6    23  (NNE)   1624    clear     none
     21:00    33     5      2   334  (NNW)   3448    clear     dust
     22:00    32     6     13     0    (N)   5261    clear     dust
     23:00    32     7      7   359    (N)  17193    clear     dust
     00:00    31     7     13   349    (N)  24888    clear     dust
     01:00    30     8     11   355    (N)  28350    clear     dust
     02:00    28    10     11   308   (NW)  29786    clear     dust
     03:00    29     9     11     6    (N)  26368    clear     dust
     04:00    28    12     15    11    (N)  18009 mstly clr    dust
     05:00    29     9     17     1    (N)  18836 mstly clr    dust
     06:00    28     9      9    54   (NE)  13370 mstly clr    dust
     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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