Subject: 3.5m Night Log 20240229
From: ajt@apo.nmsu.edu
Date: Fri,  1 Mar 2024 13:00:42 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, February 29, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
WY04  M.Brotherton      M.Brotherton
UW06  B.Morris          L.Hebb
CU04  Y.Notsu           Y.Notsu
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY04  TSPEC          --:--   --:--
UW06  ECHELLE        --:--   --:--
CU04  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY04/R      18:09  19:39  1.5    0    0    0   0.0  0.0   0    0
UW06/R      19:39  00:10  3.2  1.3    0    0   0.0  0.0   0    0
CU04/R      00:10  06:22    0  6.2    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
We had fog all day so there was still snow left on the dome from last night's storm, and we also had fog and/or high humidity all night. We weren't able to open, and even when the humidity dropped for a little bit the ambient temperatures stayed fairly warm and the primary mirror never reached freezing temperatures.
Everything outside is sparkling with frost!
Dome is parked at 104 az for LN2 transfer.
                    ------- 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    32    31     10   348  (NNW)        mstly cldy   fog
     17:00    30    29      3   355    (N)        mstly clr   humid
     18:00    30    18     15   312   (NW)        mstly clr   humid
     19:00    28    28      4   278    (W)        mstly clr    fog
     20:00    28    28     11   304   (NW)        mstly clr   humid
     21:00    30    28      6   331  (NNW)        mstly clr   humid
     22:00    31    30      6   280    (W)        mstly clr   humid
     23:00    32    28      9   277    (W)        mstly clr   humid
     00:00    32    30     10   307   (NW)        mstly clr   humid
     01:00    33    29     17   317   (NW)        mstly clr   humid
     02:00    32    29      9   284  (WNW)           clear    humid
     03:00    33    28     10   291  (WNW)           clear    humid
     04:00    33    27     10   269    (W)           clear    humid
     05:00    33    27     11   273    (W)           clear    humid
     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