Subject: 3.5m Night Log 20230626
From: ajt@apo.nmsu.edu
Date: Tue, 27 Jun 2023 12:13:46 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, June 26, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM08  E.Nielsen         A.Peck,W.Roberson
CU01  Z.Berta-Thompson  C.Murray
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM08  ECHELLE        21:18   23:39
CU01  KOSMOS         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM08/R      20:24  23:54    0   1.2   0    0   0.0  2.3   0    0
CU01/R      23:54  05:48   4.2  1.7   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
We didn't open at the start of the night because we were waiting for the radar to clear up. We got on sky for a little while, through some clouds, but then the radar came back. We closed at 23:40 due to radar. The clouds proceeded to get really bad, and we finally got a few raindrops after 01:00. By the time the radar started to clear up, the dust counts were over the closure limit along with noticeable pollen.
We called it a night at 04:00 once there was no chance of catching any of the transit.
                    ------- 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
--------------------------------------------------------------------------
 21:23 ecamera    384(  501) -54  55  21.6 24.8 25.0 25.1 22.2   ND3  0.97
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    81    35     18   253  (WSW)   1960 mstly clr    none
     17:00    86    36     11   240  (WSW)   1752 mstly clr    none
     18:00    79    34     14   238  (WSW)   1760 mstly clr    none
     19:00    79    33      8   228   (SW)   1844 mstly clr    none
     20:00    73    35      6   178    (S)   2350 mstly clr    none
     21:00    71    35     16   153  (SSE)   2533  ptly cldy   none
     22:00    71    35     16   159  (SSE)   1960  ptly cldy   none
     23:00    72    35     14   179    (S)   2044  ptly cldy   none
     00:00    71    34     16   171    (S)   1881  ptly cldy   none
     01:00    68    35     18   212  (SSW)   2033   cloudy   lt rain
     02:00    68    36     11   261    (W)   5021   cloudy     dust
     03:00    68    37      6   297  (WNW)   3809   cloudy     dust
     04:00    67    36      7   236   (SW)   5076   cloudy     dust
     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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