Subject: 3.5m Night Log 20210718
From: cgray@apo.nmsu.edu
Date: Mon, 19 Jul 2021 09:34:16 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, July 18, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
AP01  S.Merkowitz       R.McMillan
GS02  D.Gies            K.Shepard
CU01  N.Schneider       C.Schmidt
NM03  A.Hedlund         J.Jackiewicz
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
AP01  APOLLO         20:38   21:15
GS02  ECHELLE        21:19   23:10
CU01  ECHELLE        --:--   --:--
NM03  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
AP01/R      20:19  21:19    0   0.3   0    0   0.0  0.7   0    0
GS02/R      21:19  01:10    0   2.0   0    0   0.0  1.9   0    0
CU01/R      01:10  03:10   1.3  0.7   0    0    0    0    0    0
NM03/R      03:10  06:00   2.8  0.0   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Hey, we were able to open for our last night on sky! We didn't stay open very long, but enough to show the Moon who's boss and get some stellar spectra. Seeing was...amazingly good before the humidity ruined everything. There was no chance of it burning off in time for NM03 so we closed up shop early.
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
--------------------------------------------------------------------------
 20:24 ecamera    400(  -25) -22  80  14.3 15.5 15.8 15.4 14.4   ND1  0.70
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    61    50      1   233   (SW)   1566   cloudy   lt rain
     17:00    60    52      2   222   (SW)   1826   cloudy   lt rain
     18:00    60    55      2   190    (S)   2196 mstly cldy   none
     19:00    60    53      1   213  (SSW)   1952 mstly cldy   none
     20:00    58    53      1   347  (NNW)   2164  ptly cldy   none
     21:00    57    53     12    45   (NE)         ptly cldy   none
     22:00    57    53     10    38   (NE)         ptly cldy  humid
     23:00    56    53     15    60  (ENE)         ptly cldy  humid
     00:00    57    51     15    60  (ENE)        mstly clr   humid
     01:00    56    53     15    79    (E)        mstly clr   humid
     02:00    55    52     13    80    (E)        mstly clr   humid
     03:00    54    51     13    79    (E)         ptly cldy   fog
     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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