Subject: 3.5m Night Log 20220319
From: ajt@apo.nmsu.edu
Date: Sun, 20 Mar 2022 13:09:40 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, March 19, 2022
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
WY01  M.Brotherton      J.McLane
UW07  B.Morris          L.Hebb,S.Hawley,B.Morris
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY01  TSPEC          19:23   20:51
UW07  ECHELLE        20:56   06:20
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY01/R      19:23  20:53    0    0    0    0   1.5  0.0   0    0
UW07/R      20:53  06:58    0    0    0    0   0.0  10.1  0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
We had good seeing but lots of thin clouds at the start of the night and then on and off throughout the night, but nothing that impeded observing entirely. A little after 23:00 the gusts picked up and and later wind speed conditions were marginal. UW07 had targets directly opposite the wind and we were able to stay open.
After 05:30 I closed the louvers & the door on the intermediate level, turned the IntEx fans off and the Press fans on as 1-micron dust counts went over 3000. They never got much higher than 3500 counts.
UW07 finished a little after twilight.
Happy vernal equinox!
                    ------- 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
--------------------------------------------------------------------------
 19:51 tcamera    425( 1089) -46  54   4.7  5.5  5.8  5.3  5.2   Ks  0.96
 20:59 ecamera    392( -221) -61  26   4.6  4.4  5.0  4.2  4.4   ND5  0.84
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    48     3     13   265    (W)   1933 mstly cldy   none
     17:00    45     2     13   232   (SW)   2024 mstly cldy   none
     18:00    45     1      6   240  (WSW)   1917 mstly cldy   none
     19:00    41     1     10   185    (S)   1942  ptly cldy   none
     20:00    41     1     11   192  (SSW)   1942 mstly clr    none
     21:00    40     1     10   184    (S)   2283 mstly clr    none
     22:00    41     2     19   183    (S)   2419 mstly clr    none
     23:00    44     5     29   184    (S)   2264 mstly clr    none
     00:00    43     3     18   188    (S)   1885 mstly clr    none
     01:00    44     5     13   188    (S)   1882 mstly clr    none
     02:00    43     8     27   187    (S)   1728  ptly cldy   none
     03:00    44     7     29   186    (S)   1637  ptly cldy   none
     04:00    44     7     32   195  (SSW)   1988  ptly cldy   none
     05:00    43     9     28   188    (S)   2967  ptly cldy   none
     06:00    42     9     23   195  (SSW)   3009  ptly 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: 2.6.0