Subject: 3.5m Night Log 20210929
From: cgray@apo.nmsu.edu
Date: Thu, 30 Sep 2021 10:40:36 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, September 29, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY03  B.Proudfoot       B.Proudfoot
NM01  M.Croom           M.Croom
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY03  ARCTIC         18:58   00:18
NM01  DIS            --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY03/R      18:58  01:10   0.5  0.5   0    0   5.3  0.0   0    0
NM01/R      01:10  06:49   0.0  5.6   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started out clear but a bit smokey. Seeing was amazing! Sub-arcsecond even at 2 airmasses! However, the clouds started rolling in around 9pm and radar was close enough that we had to close shortly after midnight. However, the rain didn't actually start falling until 4:30 am. It is unlikely to let up until Friday and, as such, I call it once the rain started.
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
--------------------------------------------------------------------------
 19:46 arctic   495( 1281)  82  32   9.9 10.9 10.7 10.4  9.9   sdss-r  0.94
 21:23 arctic   410( 1133) 111  39  10.3  9.7 10.1  9.4  9.6   sdss-z  0.91
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    54    40      9   255  (WSW)   2380    clear     none
     17:00    52    39     12   298  (WNW)   2013    clear     none
     18:00    52    39      7   280    (W)   1933    clear     none
     19:00    50    39      8   280    (W)   1937    clear     none
     20:00    50    39     10   268    (W)   1721    clear     none
     21:00    49    39      9   265    (W)   1685 mstly clr    none
     22:00    50    38      9   269    (W)   1687  ptly cldy   none
     23:00    49    39     10   269    (W)   1651  ptly cldy   none
     00:00    50    39      6   260    (W)   1674 mstly cldy   none
     01:00    51    38      2   255  (WSW)   2032   cloudy     none
     02:00    48    37      6   242  (WSW)   1873 mstly cldy   none
     03:00    46    39      8   186    (S)   1880   cloudy     none
     04:00    47    38      1   308   (NW)   2984   cloudy     rain
     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.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.4.2
Current HUB version: v20171231_01
Current TUI version: 2.6.0