Subject: 3.5m Night Log 20210110
From: cgray@apo.nmsu.edu
Date: Mon, 11 Jan 2021 13:56:04 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, January 10, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW02  Y.Ivezi           P.Yoachim
NM04  M.Croom           M.Croom, B.Semock
WY01  M.Brotherton      J.McLane
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW02  ARCTIC         --:--   --:--
NM04  DIS            23:08   05:07
WY01  TSPEC          05:23   06:38
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW02/R      17:25  20:25   3.0  0.0   0    0    0    0    0    0
NM04/R      20:25  05:18   2.7   0    0    0   6.2  0.0   0    0
WY01/R      05:18  06:58    0    0    0    0   0.4  1.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started with freezing fog and light snow flurries, but nothing that accumulated. I thought the humidity would kill us for sure but things improved a little before midnight and the clouds were never thick. We even had moderately good seeing!
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
--------------------------------------------------------------------------
 23:12 dcamera    435( -113) 138  51  -8.3 -7.0 -4.6 -7.2 -7.9   --  1.50
 01:05 dcamera    503( -124)  10  60  -8.4 -8.5 -7.5 -8.6 -8.5   --  1.18
 05:30 tcamera    432(  195) 157  66  -7.4 -8.2 -7.7 -8.2 -7.5   MK-s  1.34
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    17    16      3   246  (WSW)          cloudy   lt snow
     17:00    17    15      2   227   (SW)          cloudy   lt snow
     18:00    16    15      6   265    (W)          cloudy     none
     19:00    16    15      3   304   (NW)          cloudy     none
     20:00    16    15      0   254  (WSW)          cloudy     none
     21:00    15    14      6    12  (NNE)        mstly cldy   none
     22:00    14    12      8   358    (N)         ptly cldy   none
     23:00    17     8      8   356    (N)         ptly cldy   none
     00:00    17     8     17    17  (NNE)    149 mstly clr    none
     01:00    17     6     16    16  (NNE)    294 mstly clr    none
     02:00    17     7     22    20  (NNE)           clear     none
     03:00    18     7     19    17  (NNE)    322 mstly clr    none
     04:00    19     6     12    18  (NNE)    337 mstly clr    none
     05:00    18     6     13    47   (NE)    374 mstly clr    none
     06:00    18     6     19    62  (ENE)    402 mstly clr    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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