Subject: 3.5m Night Log 20240504
From: ajt@apo.nmsu.edu
Date: Sun,  5 May 2024 12:39:41 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, May 04, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY02  M.Joner           B.Boizelle,M.Joner
CU04  Y.Notsu           A.Kowalski
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY02  KOSMOS         20:32   00:58
CU04  ARCTIC         01:11   03:19
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY02/R      19:56  01:10    0    0    0    0   5.2  0.0   0    0
CU04/R      01:10  06:03   1.1  1.6   0    0   2.2  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Most of the afternoon clouds cleared out by sunset, though we had a few thin clouds throughout the night. Good seeing during A-half that got a bit worse B-half.
During test slews, the NA2 rotator halted with a "cannot compute" error in the status window. Commanded as tcc rot -30 mount; from rot 0 and stopped at -5.6. (2024-05-05 00:55:36 .tcc.0 0 tcc w WarnRotStatus; RotStat=-5.611000,-0.000120,5221587336.85000,0x00000001; RotDTime=0.09) Re-initialized axes and had no other problems with it.
Az fiducial error on slew back after tracking (not worrisome).
Pollen counts low all night.
Closed at 03:19 due to dust and weren't able to reopen.
                    ------- 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
--------------------------------------------------------------------------
 19:45 khigh   270( 1250) -54  58  11.8 13.4 13.6 12.9 11.9   --  0.85
 21:34 khigh   445( 1335) -79  37  11.3 11.1 11.9 11.0 11.2   --  1.03
 00:17 arctic   430( 1289) 156  65   9.9  9.8 10.8  9.6  9.6   ARCTIC_4170  1.26
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    62    20     12   193  (SSW)   2543  ptly cldy   none
     17:00    57    32     12   189    (S)   2761  ptly cldy   none
     18:00    60    28     14   223   (SW)   2670  ptly cldy   none
     19:00    58    10     21   255  (WSW)   2296 mstly clr    none
     20:00    54     6     18   234   (SW)   1991    clear     none
     21:00    53     7     15   246  (WSW)   2096    clear     none
     22:00    53     6     15   246  (WSW)   2350    clear     none
     23:00    52    15     10   231   (SW)   2888    clear     none
     00:00    52    19      9   249  (WSW)   2988    clear     none
     01:00    49    24     11   229   (SW)   3546    clear     none
     02:00    50    28     10   218   (SW)   3626    clear     none
     03:00    48    30     11   226   (SW)   3983 mstly clr    dust
     04:00    48    29      9   186    (S)   4112 mstly clr    dust
     05:00    45    30      9   184    (S)   4036 mstly clr    dust
     06:00    44    28      9   188    (S)   3862 mstly clr    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.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.4.2
Current HUB version: v20171231_01
Current TUI version: 3.1.5