Subject: 3.5m Night Log 20240408
From: ajt@apo.nmsu.edu
Date: Tue,  9 Apr 2024 11:30:21 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, April 08, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
OU03  A.Moss            A.Moss
CU03  A.Kowalski        M.Delamer,J.Libby-Roberts
                        ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU03  ARCTIC         --:--   --:--
CU03  ARCTIC         01:14   02:08
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU03/R      19:37  23:00  3.2  0.2    0    0   0.0  0.0   0    0
CU03/R      23:00  06:32  6.7    0    0    0   0.9  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Indoor optidew read 100% at 22:19 for a few minutes.
Dusty most of the night and clouds ranging from thin enough to see through to completely opaque.
Opened up after 01:00 once dust came down and clouds thinned out. We got almost an hour on sky before the dust spiked up again with a wind shift. The dust and clouds stayed worse after that and we gave up at 04:00.
                    ------- 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
--------------------------------------------------------------------------
 00:24 arctic   142(  737) 223  40   2.9  3.8  5.2  3.8  3.2   SDSS_i  1.76
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    47     2     17   197  (SSW)   6340  ptly cldy   dust
     17:00    49     3     26   210  (SSW)   5560  ptly cldy   dust
     18:00    46     2     23   223   (SW)   5523  ptly cldy   dust
     19:00    43     0     13   267    (W)   4998  ptly cldy   dust
     20:00    40     1     11   239  (WSW)   5026  ptly cldy   dust
     21:00    40     1      8   258  (WSW)   7729   cloudy     dust
     22:00    41    -1      8   258  (WSW)   6100   cloudy     dust
     23:00    39     1      1   291  (WNW)   4377   cloudy     dust
     00:00    39     2      5   335  (NNW)   3473 mstly cldy   dust
     01:00    38     3      3   284  (WNW)   2371  ptly cldy   none
     02:00    35     4      9    84    (E)   2245   cloudy     dust
     03:00    34    18      6    88    (E)   6637   cloudy     dust
     04:00    33    22      9    87    (E)   5377   cloudy     dust
     05:00    36    12      4   179    (S)   3482   cloudy     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: 3.1.3