Subject: 3.5m Night Log 20221219
From: mcmillan@apo.nmsu.edu
Date: Tue, 20 Dec 2022 13:34:01 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, December 19, 2022
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU03  J.Bally           J.Bally
UW04  J.Birky           J.Birky
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU03  ARCTIC         --:--   --:--
UW04  ECHELLE        01:03   06:15
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU03/R      17:09  00:10   7.0   0    0    0   0.0  0.0   0    0
UW04/R      00:10  06:52   1.0   0    0    0   2.7  3.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Tonight we were under a reduced wind limit of 15 mph due to powdery snow lingering on the roof of the dome.  During first half the wind was never below this limit, but it dropped after midnight.  There was also a problem with the dewpoint sensor as indicated in the weather log below (air temperature was not actually 99 degrees, or we would not have been concerned about snow).
I had some difficulty mounting KOSMOS which caused a short delay, but after that we were open for the remainder of the night.
                    ------- 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
--------------------------------------------------------------------------
 01:15 ecamera    610( -485) -119  29  37.3 -1.5 -1.7 -2.0 -0.2   ND1  1.42
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    99    32      4   316   (NW)    428    clear     none
     17:00    99    32     17     4    (N)    395    clear     none
     18:00    99    32      8   354    (N)    760    clear     none
     19:00    99    32     11    22  (NNE)    403    clear     none
     20:00    99    32     19    27  (NNE)    413    clear     none
     21:00    99    32     24     9    (N)    403    clear     none
     22:00    99    32     12    30  (NNE)    375    clear     none
     23:00    99    32     23    14  (NNE)    229    clear     none
     00:00    99    32     16    45   (NE)    767    clear     none
     01:00    99    32      8    50   (NE)    238    clear     none
     02:00    99    32      6   218   (SW)    301    clear     none
     03:00    99    32      1   127   (SE)    263    clear     none
     04:00    99    32      2   265    (W)    277    clear     none
     05:00    99    32      5   196  (SSW)    259    clear     none
     06:00    99    32      5   186    (S)    306    clear     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.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.4.2
Current HUB version: v20171231_01
Current TUI version: 2.6.0