Subject: 3.5m Night Log 20231128
From: cgray@apo.nmsu.edu
Date: Wed, 29 Nov 2023 13:06:01 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, November 28, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM10  A.Peck            E.Nielsen
CU02  A.Kowalski        A.Lin, V.Reji
AP01  S.Merkowitz       R.McMillan
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM10  ECHELLE        17:24   23:15
CU02  ARCTIC         23:20   02:09
AP01  APOLLO         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM10/R      17:06  23:20   0.3   0    0    0   0.5  5.4   0    0
CU02/R      23:20  05:37    0   4.4   0    0   0.0  1.8   0    0
AP01/R      05:37  06:37    0   1.0   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The evening started out with virga but we were lucky and only had to wait about 20 min after sunset for it to pass. Things were good for a while, with great seeing!! But the humidity kept creeping up and creeping up and we closed shortly after 2am. We were not able to reopen.
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
--------------------------------------------------------------------------
 17:32 ecamera    533(   57) -48  55   2.5  4.7  4.0  4.7  3.4   ND1  0.76
 23:23 arctic   404(  875) 138  32   1.9  1.0  2.2  1.5  2.0   semrock  1.12
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    41    22      5   267    (W)    750  ptly cldy   none
     17:00    37    20      5   284  (WNW)    663  ptly cldy   none
     18:00    36    21      6   261    (W)    677 mstly clr    none
     19:00    36    26      6   261    (W)    737 mstly clr    none
     20:00    36    31      6   268    (W)    642 mstly clr    none
     21:00    37    28      2   253  (WSW)    720 mstly clr    none
     22:00    37    31      5   261    (W)    355 mstly clr    none
     23:00    36    31      7   215   (SW)         ptly cldy  humid
     00:00    36    32      8   196  (SSW)        mstly cldy  humid
     01:00    36    31      9   188    (S)        mstly cldy  humid
     02:00    35    32     11   206  (SSW)        mstly cldy  humid
     03:00    36    32     10   208  (SSW)        mstly cldy  humid
     04:00    34    32     12   229   (SW)        mstly cldy  humid
     05:00    35    32     14   224   (SW)        mstly cldy  humid
     06:00    36    32     11   216   (SW)        mstly cldy  humid
     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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