Subject: 3.5m Night Log 20250717
From: cgray@apo.nmsu.edu
Date: Fri, 18 Jul 2025 10:57:06 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, July 17, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
EN02  B.Ketzeback       C.Gray
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN02  X              --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
EN02/W      20:20  05:59   4.0  5.6   0    0   0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
A somewhat annoying night. Since kosmos is down, I was hoping that we could give some echelle time to NM02 but the weather wasn't cooperating. We had rain, clouds, virga and then a bit of a gap with high humidity and clouds from the east that I didn't trust. Then more clouds and light rain. I called it at 5am.
We were not able to do the kosmos engineering tasks and the dome wasn't cool enough for echelle focus. I spent an embarrassing amount of time with the tertiary remap. Turns out I kept doing the same typo over and over. I...eventually sorted it out. Then I was struggling with wiki format so I worked on my teaching write up.
                    ------- 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
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               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    56    50     18    82    (E)        mstly cldy   rain
     17:00    63    46      8    92    (E)    990 mstly cldy   rain
     18:00    69    50      5   197  (SSW)   1365  ptly cldy   none
     19:00    65    47      1   169    (S)    931  ptly cldy   none
     20:00    61    50     11   126   (SE)   1058  ptly cldy   none
     21:00    60    47     11   131   (SE)   1480 mstly clr    none
     22:00    60    45     11   127   (SE)   1187 mstly clr    none
     23:00    60    45     15   134   (SE)   1795  ptly cldy   none
     00:00    59    47     11   175    (S)   2133   cloudy     none
     01:00    61    46     16   134   (SE)   2185   cloudy     none
     02:00    59    50     13   151  (SSE)   2586   cloudy   lt rain
     03:00    58    49     14   165  (SSE)        mstly cldy lt rain
     04:00    59    46     11   159  (SSE)   1094 mstly cldy   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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