Subject: 3.5m Night Log 20230406
From: cgray@apo.nmsu.edu
Date: Fri,  7 Apr 2023 12:51:01 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, April 06, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
LA01  M.Hoffmann        D.Thompson, M.Hoffmann, R.Hill, M.Cecil
NM09  A.Smith           A.Smith, J.Klusmeyer
LA01  M.Hoffmann        D.Thompson, M.Hoffmann, R.Hill, M.Cecil
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
LA01  HSAR           20:15   22:21
NM09  ECHELLE        22:25   23:14
LA01  HSAR           05:07   06:35
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
LA01/R      19:35  22:23    0    0    0    0   0.6  2.2   0    0
NM09/R      22:23  03:53    0   4.7   0    0   0.0  0.8   0    0
LA01/R      03:53  06:35    0   1.2   0    0   0.0  1.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started out clear but with borderline dust and winds from the east. Seeing was a trainwreck (~4-5"). The dust became worse as the night progressed and we closed at 22:23 for about 6 hours. However, the dust dropped below the limit around 5am and LA01 was able to get a little more time on sky.
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
--------------------------------------------------------------------------
 22:46 ecamera    374( -691) 314  80  10.0 -0.1  0.7 -0.4 -0.4   Clear  2.95
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00                  7   258  (WSW)   2417    clear     none
     17:00                  9    93    (E)   2009    clear     none
     18:00                 11    71  (ENE)   2683    clear     none
     19:00                 24    79    (E)   3456    clear     none
     20:00                 15    93    (E)   3412    clear     none
     21:00                 24    76  (ENE)   3745    clear     none
     22:00                 22    83    (E)   3946    clear     none
     23:00                 21    84    (E)   4120    clear     dust
     00:00                 15    91    (E)   5732    clear     dust
     01:00                 13    94    (E)   6361    clear     dust
     02:00                 13   113  (ESE)   5666    clear     dust
     03:00                 13    78  (ENE)   5121    clear     dust
     04:00                 18    77  (ENE)   4462    clear     dust
     05:00                 15    87    (E)   3373    clear     none
     06:00                 14    86    (E)   3088    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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