Subject: 3.5m Night Log 20240120
From: cgray@apo.nmsu.edu
Date: Sun, 21 Jan 2024 10:19:51 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, January 20, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
FG01  D.Buzasi          D.Buzasi
OU02  A.Moss            A.Moss
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
FG01  echelle        20:58   22:08
OU02  KOSMOS         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
FG01/R      17:33  00:10    0   5.4   0    0   0.0  1.2   0    0
OU02/R      00:10  06:55   3.0  3.8   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
That winter storm is upon us. The evening started out with virga everywhere except directly overhead. I stayed closed until it had all cleared but we were only able to stay open for an hour. Rain from the west and south was coming directly our way. We were not able to reopen.
During checkouts I saw that one of the values to the echelle nurse tank was very much frosted over. I saw that it was lightly frosted on Friday and thought that perhaps the valve was wasn't fully closed. I made sure to close it tight but, this afternoon, there was so much frost that it was starting to cover the gauges. I gently knocked off what I could and watched the tank during fills but nothing seemed amiss. I filed PR 2183.
                    ------- 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
--------------------------------------------------------------------------
 21:03 ecamera    352( -140)  95  33   3.0  3.9  4.0  4.0  3.5   Clear  1.33
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    41    19      9   219   (SW)   1691 mstly cldy   none
     17:00    40    19     10   239  (WSW)   1578 mstly cldy   none
     18:00    39    16     14   214   (SW)    945 mstly cldy   none
     19:00    38    15     14   233   (SW)    848  ptly cldy   none
     20:00    38    14     14   234   (SW)    721 mstly cldy   none
     21:00    37    13     16   229   (SW)    652   cloudy     none
     22:00    38    13     16   236   (SW)    520   cloudy     none
     23:00    38    13     15   233   (SW)    736   cloudy     none
     00:00    39    13     16   204  (SSW)    504   cloudy     none
     01:00    35    18     14   208  (SSW)   1758   cloudy     none
     02:00    36    19     32   240  (WSW)   1961 mstly cldy   none
     03:00    35    19     20   216   (SW)   1308 mstly cldy   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