Subject: 3.5m Night Log 20230918
From: cgray@apo.nmsu.edu
Date: Tue, 19 Sep 2023 13:15:36 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, September 18, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW08  D.Wang            E.Bellm
UW03  P.Yoachim         P.Yoachim
NM01  C.Gray            C.Gray
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW08  Eyepiece       19:14   23:35
UW03  KOSMOS         00:01   04:00
NM01  Echelle        04:04   06:42
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW08/R      19:14  00:00    0    0    0    0   3.0  1.8   0    0
UW03/R      00:00  04:05    0    0   0.3   0   3.7  0.0   0    0
NM01/R      04:05  06:41    0    0    0    0   2.6  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started out clear with excellent seeing. The UW08 undergrad group used the
eyepiece until 11:30 and then donated the rest of their time to UW03. As soon as we
were done with the eyepiece the clouds rolled in and the seeing degraded. We had two
failurs of the KOSMOS disperser which required me to go up to the dome to manually move
the wheel. During NM01 nicfps started over heating. I'm not sure why as I did fills
around 7pm.
                    ------- FAILURE LOG -------
              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
UW03   K          I/H      01:32  01:48   Kosmos Disperser wheel timed out
UW03   K          I/H      03:19  03:25   Disperser wheel timed out
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 00:27 kosmos   389( 1396)  61  57  14.2 13.9 14.5 14.0 14.2   --  1.87
 04:08 ecamera    381(  315)  55  54  13.2 13.4 14.0 13.4 13.2   ND3  0.84
 05:06 ecamera    311(  250)  85  21  12.5 12.8 13.3 12.6 12.7   ND3  1.30
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    62    44     14   264    (W)    643    clear     none
     17:00    63    41     13   267    (W)    919    clear     none
     18:00    65    42      7   262    (W)    593    clear     none
     19:00    59    40      9   312   (NW)    816    clear     none
     20:00    59    36     11   300  (WNW)    694    clear     none
     21:00    59    42     10   290  (WNW)    799    clear     none
     22:00    59    43     10   270    (W)    743    clear     none
     23:00    58    42     10   265    (W)    686 mstly clr    none
     00:00    58    42      8   265    (W)    729  ptly cldy   none
     01:00    58    42      9   264    (W)    610  ptly cldy   none
     02:00    58    42      8   260    (W)    626  ptly cldy   none
     03:00    58    42      9   245  (WSW)    631  ptly cldy   none
     04:00    57    42     12   234   (SW)    735 mstly clr    none
     05:00    53    41      8   219   (SW)   1512 mstly clr    none
     06:00    54    41      8   228   (SW)    833 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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