Subject: 3.5m Night Log 20220411
From: ajt@apo.nmsu.edu
Date: Tue, 12 Apr 2022 12:32:07 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, April 11, 2022
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
JH08  N.Zakamska        H.Hwang
UW13  B.Morris          B.Morris,S.Hawley
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
JH08  DIS            --:--   --:--
UW13  ECHELLE        01:05   06:00
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
JH08/R      19:39  01:10    0   5.5   0    0   0.0  0.0   0    0
UW13/R      01:10  06:29    0    0    0    0   1.9  3.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
We had a very blustery night. Wind and gusts remained too high to open for all of A-half, often over 40mph, with elevated dust counts for a while. Gust speeds finally came down under 35mph around 01:00.
At switchover we had error: ecam not connected. hub startNubs ecam+ecamera & ecam init brought it back.
Wind speeds were marginal for most of B-half but UW13 had targets facing out of the wind and the telescope telemetry and guider images didn't seem highly affected.
When the dust counts rose above 3000 counts I put the fans into the reverse configuration and closed the louvers; with this and being pointed out of the wind it kept the inside dust counts a few hundred counts lower than the outside dust counts.
                    ------- 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
--------------------------------------------------------------------------
 01:14 ecamera    633(  174) 165  62   6.9  8.3  9.0  8.1  7.9   ND2  1.36
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    56    21     26   257  (WSW)   2310    clear     none
     17:00    54    19     25   264    (W)   2169    clear     none
     18:00    54    20     34   259    (W)   2935    clear     none
     19:00    52    23     32   254  (WSW)   4323    clear     dust
     20:00    50    22     32   251  (WSW)   4849    clear     dust
     21:00    50    24     37   255  (WSW)   3920    clear     dust
     22:00    49    22     34   255  (WSW)   2753    clear     none
     23:00    47    21     27   253  (WSW)   2352    clear     none
     00:00    47    21     28   244  (WSW)   2402    clear     none
     01:00    45    22     21   248  (WSW)   2665    clear     none
     02:00    43    23     20   247  (WSW)   2763    clear     none
     03:00    42    24     28   267    (W)   2937    clear     none
     04:00    41    23     29   256  (WSW)   2902    clear     none
     05:00    40    22     34   240  (WSW)   3020    clear     none
     06:00    38    24     22   240  (WSW)   3973    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