Subject: 3.5m Night Log 20230526
From: decolib@apo.nmsu.edu
Date: Sat, 27 May 2023 11:28:18 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, May 26, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU01  Z.Berta-Thompson  Z.Berta-Thompson
CU01  Z.Berta-Thompson  Z.Berta-Thompson
JH03  R.Angulo          R.Angulo
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU01  KOSMOS         20:12   00:00
CU01  KOSMOS         01:07   01:47
JH03  ARCTIC         03:10   04:56
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU01/R      20:12  01:10    0   1.1   0    0   0.0  3.9   0    0
CU01/R      01:10  03:10   1.3   0    0    0   0.0  0.7   0    0
JH03/R      03:10  05:49   0.9   0    0    0   1.5  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: D.DeColibus
Mostly clear during A-half, but the dust counts rose rapidly after 11:30 and we closed up at 00:00. The dust improved and we tried to reopen at 01:07, but clouds started rolling in right as we did so, and we didn't get anything on the target. We closed again at 01:47.
We had a period of relatively few clouds that allowed JH03 to get some data, and closed up at 04:56 as more clouds came in.
                    ------- 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
--------------------------------------------------------------------------
 20:40 kosmos   438( 1169)  53  38  12.6 14.9 15.3 14.2 13.1   --  2.43
 03:16 arctic   408( 1063) 231  58  12.8 12.8 13.7 12.8 12.7   SDSS_r  0.97
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    69    39     19   187    (S)   1181 mstly clr    none
     17:00    68    36     27   219   (SW)   1258 mstly clr    none
     18:00    66    38     19   214   (SW)   1187 mstly clr    none
     19:00    61    46     21   181    (S)   1512 mstly clr    none
     20:00    58    46     13   164  (SSE)   1778    clear     none
     21:00    54    49     11   174    (S)   2423    clear     none
     22:00    58    38     16   179    (S)   2264    clear     none
     23:00    59    28     12   180    (S)   1829 mstly clr    none
     00:00    57    32     21   197  (SSW)   5654 mstly clr    dust
     01:00    57    33     16   231   (SW)   3141 mstly cldy   none
     02:00    55    33     18   204  (SSW)   2239 mstly cldy   none
     03:00    54    32     14   217   (SW)   2287  ptly cldy   none
     04:00    53    31     16   213  (SSW)   2036 mstly cldy   none
     05:00    53    33     15   206  (SSW)   2210   cloudy     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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