Subject: 3.5m Night Log 20250927
From: ajt@apo.nmsu.edu
Date: Sun, 28 Sep 2025 12:28:11 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, September 27, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
AP01  S.Merkowitz       T.Sutherland,B.Ketzeback
UW08  C.Chandler        C.Chandler
UW01  S.Hawley          L.Hebb
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
AP01  APOLLO         --:--   --:--
UW08  ARCTIC         --:--   --:--
UW01  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
AP01/W      19:01  20:01    0   1.0   0    0   0.0  0.0   0    0
UW08/R      20:01  01:10   3.0  2.2   0    0   0.0  0.0   0    0
UW01/R      01:10  06:47   5.6   0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
All-sky camera frozen, restarted with USB.
Enclosure optidew wasn't being shown on the weather status page but I was able to switch it to remote mode which fixed the problem.
Power cycled dataq to unfreeze it.
Collimation errors on sec A, blue warning text in the log that said "Collimation Failure: mir35mSec error too large to correct". Separate email sent with more details.
Two Motions errors in a row slewing down, both at 20 alt before I homed the secondary, afterwards I had no problems.
Rain and clouds kept us closed all night. There were nig thunderstorm at the end of the night! Lots of little power flashes.
                    ------- 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
--------------------------------------------------------------------------
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    58    46      7   247  (WSW)    189  ptly cldy   none
     17:00    58    44      9   241  (WSW)    216  ptly cldy   none
     18:00    58    45      8   221   (SW)    209  ptly cldy   none
     19:00    56    46      8   136   (SE)         ptly cldy   rain
     20:00    52    47     17   129   (SE)         ptly cldy   none
     21:00    51    47     13   113  (ESE)          cloudy   lt rain
     22:00    51    47     18   116  (ESE)          cloudy     none
     23:00    52    47     18   124   (SE)          cloudy     none
     00:00    51    46     16   116  (ESE)          cloudy     none
     01:00    52    45     14   128   (SE)          cloudy   lt rain
     02:00    51    46     15   114  (ESE)          cloudy     rain
     03:00    50    47     15   117  (ESE)          cloudy     rain
     04:00    48    48     17   242  (WSW)          cloudy     rain
     05:00    46    44      9   110  (ESE)          cloudy     rain
     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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Current HUB version: v20171231_01
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