Subject: 3.5m Night Log 20200810
From: mcmillan@apo.nmsu.edu
Date: Tue, 11 Aug 2020 12:39:59 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, August 10, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW04  G.Wallerstein     M.Thompson
UW07  G.Wallerstein     C.Sakari
CG01  C.Gray            C.Gray,S.Kovac
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW04  DIS            23:15   00:45
UW07  ECHELLE        00:49   03:40
CG01  Echelle        03:40   06:18
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW04/R      20:01  01:10   3.2   0    0    0   0.7  1.2   0    0
UW07/R      01:10  03:30    0    0    0    0   0.0  2.3   0    0
CG01/R      03:30  06:16    0    0    0    0   0.0  2.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Clouds and some nearby radar returns (semi-believable) kept us closed at the start of the night.  Slowly the clouds diminished until there was just one directly over APO.  When that thinned, I opened the dome and we were able to observe.  Seeing was poor at first, and we had a little bit of windshake with gusts at only 20 mph, but it subsided just when I was about to move away.  Aside from that everything worked quite well.
                    ------- 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
--------------------------------------------------------------------------
 23:24 dcamera    374( 1114) 338  23  18.3 20.0 20.2 19.8 18.8   -  1.80
 00:56 ecamera    406(  165)   4  40  18.8 19.0 19.5 18.9 18.9   ND1  1.50
 03:48 ecamera    470(  124) 153  60  17.6 17.1 17.7 17.0 17.4   ND2  1.05
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    77    37      5   254  (WSW)    428  ptly cldy   none
     17:00    76    34     11   265    (W)    333  ptly cldy   none
     18:00    74    31     11   265    (W)    274  ptly cldy   none
     19:00    72    33      9   268    (W)    406  ptly cldy   none
     20:00    69    33      4   263    (W)    418 mstly cldy   none
     21:00    68    35      4   333  (NNW)    477   cloudy     none
     22:00    69    34      5   293  (WNW)    452   cloudy     none
     23:00    69    36      1   190    (S)    574 mstly cldy   none
     00:00    66    40      2   140   (SE)    857  ptly cldy   none
     01:00    66    40     10   180    (S)    727 mstly clr    none
     02:00    63    42      9   195  (SSW)    853 mstly clr    none
     03:00    63    44     13   184    (S)   1975 mstly clr    none
     04:00    63    42      9   184    (S)   1791  ptly cldy   none
     05:00    61    41      5   207  (SSW)   1327  ptly cldy   none
     06:00    64    39      1   240  (WSW)   1110 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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