Subject: 3.5m Night Log 20230312
From: mcmillan@apo.nmsu.edu
Date: Mon, 13 Mar 2023 12:35:17 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, March 12, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU07  B.Oppenheimer     M.Croom
OU04  K.Leighly         K.Leighly,D.Terndrup
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU07  DIS            19:48   00:56
OU04  TSPEC          01:15   05:30
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU07/R      19:17  01:10   0.5   0    0    0   4.6  0.7   0    0
OU04/R      01:10  07:08    0    0    0    0   0.0  6.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
I delayed opening to watch some radar to the north, but decided it wasn't particularly threatening during twilight, so not much time was lost.  We also had high clouds to contend with, but at least the seeing was moderately good.
During second half, skies were mostly clear and seeing was good.  Observing was so productive that the team ran through their target list before the start of astronomical twilight and used their remaining time for calibrations.
                    ------- 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
--------------------------------------------------------------------------
 19:03 kosmos   485(  804)  83  61  10.0  6.8  6.7  6.3  5.4   -  1.31
 00:21 tcamera    435(  697)  43  64  10.0  1.4  2.8  1.9  1.9   Ks  1.18
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00                 12   264    (W)    786  ptly cldy   none
     17:00                 15   244  (WSW)    854 mstly clr    none
     18:00                 14   216   (SW)    965 mstly clr    none
     19:00                 18   240  (WSW)   1197  ptly cldy   none
     20:00                 20   247  (WSW)   1316  ptly cldy   none
     21:00                 18   252  (WSW)   1335  ptly cldy   none
     22:00                 16   249  (WSW)   1374 mstly clr    none
     23:00                 17   271    (W)   3183 mstly clr    none
     00:00                 16   277    (W)   1620 mstly clr    none
     01:00                  7   260    (W)   1549 mstly clr    none
     02:00                  6   293  (WNW)   1985 mstly clr    none
     03:00                  6   340  (NNW)   1506 mstly clr    none
     04:00                  7   332  (NNW)   1304 mstly clr    none
     05:00                  6   311   (NW)   1174 mstly clr    none
     06:00                 11   345  (NNW)   1386 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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