Subject: 3.5m Night Log 20230921
From: ajt@apo.nmsu.edu
Date: Fri, 22 Sep 2023 12:39:36 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, September 21, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
JH05  C.Lisse           C.Lisse
AV01  A.Verbiscer       A.Verbiscer
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
JH05  NICFPS         19:10   21:06
AV01  ARCTIC         02:07   03:43
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
JH05/R      19:10  01:10   2.1  1.9   0    0   0.0  2.0   0    0
AV01/R      01:10  06:43   4.2   0    0    0   1.4  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Closed a little after 21:00 due to radar and encroaching thick clouds, we got a little rain after midnight.
The sky and radar finally cleared up around 02:00 and we were able to open back up again for a little over an hour and a half before the radar and clouds came back. We were unable to open again.
DIS red temps have been in the 180s whenever I've gone upstairs 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
--------------------------------------------------------------------------
 19:21 NICFPS     312( 1795)   1  61  12.8 14.5 14.4 14.3 13.3   MK-J  0.96
 20:12 NICFPS     401( 1829)  48  61  12.7 13.4 13.7 13.1 12.9   MK-J  0.78
 02:27 arctic   471( 1476)  36  63  12.8 12.9 13.6 13.1 13.1   SDSS_r  0.92
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    61    52     13   223   (SW)   1347 mstly cldy   none
     17:00    59    51      9   265    (W)   1565 mstly clr    none
     18:00    59    49     13   197  (SSW)   1166 mstly clr    none
     19:00    55    49     11   200  (SSW)   1385  ptly cldy   none
     20:00    55    46     12   217   (SW)   1500  ptly cldy   none
     21:00    55    46     10   258  (WSW)   1329   cloudy     none
     22:00    56    46     11   248  (WSW)   1345   cloudy     none
     23:00    57    47     12   236   (SW)   1623   cloudy     none
     00:00    57    48     10   259    (W)   2046   cloudy     rain
     01:00    56    49     12   267    (W)   1891   cloudy     none
     02:00    56    48     15   262    (W)   1682 mstly clr    none
     03:00    56    48     12   241  (WSW)   2033  ptly cldy   none
     04:00    56    49     14   239  (WSW)   2467 mstly cldy   none
     05:00    55    49     14   250  (WSW)   2557   cloudy     none
     06:00    54    48     11   244  (WSW)   2570   cloudy     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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