Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, May 28, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
CU03  A.Kowalski        J.Libby-Roberts,P.Haran-Premnath
UV01  R.Squillace       R.Squillace           
UW08  S.Hawley          L.Hebb                

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU03  ARCTIC         --:--   --:--   
UV01  KOSMOS         --:--   --:--
UW08  ECHELLE        --:--   --:--

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU03/R      20:13  01:10    0  5.0    0    0   0.0  0.0   0    0
UV01/R      01:10  03:50    0  2.7    0    0   0.0  0.0   0    0
UW08/R      03:50  05:48  1.3  0.7    0    0   0.0  0.0   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: H.Abbot

Nearby rain and cloud kept us closed all night.

Assembled and mounted DSSI. NA2 rotator zeroed, offset by -0.1365.

                    ------- 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    66    38     22   186    (S)   1229   cloudy     rain 
     17:00    56    40     12   135   (SE)   1501   cloudy   lt rain
     18:00    57    40      9   127   (SE)   1512   cloudy     none 
     19:00    59    39     16   185    (S)   1526   cloudy     none 
     20:00    58    32     18   192  (SSW)   1590   cloudy     none 
     21:00    56    30     10   199  (SSW)   1736   cloudy     none 
     22:00    57    23      9   234   (SW)   1654   cloudy     none 
     23:00    56    24      6   187    (S)   1432   cloudy   lt rain
     00:00    57    22      7   232   (SW)   1517   cloudy     none 
     01:00    55    22     10   241  (WSW)   1621   cloudy     none 
     02:00    54    28      1   303  (WNW)   1415   cloudy     none 
     03:00    52    31      2   350    (N)   1391   cloudy     none 
     04:00    53    18      2   235   (SW)   1161   cloudy     none 
     05:00    54    20     15   216   (SW)   1225   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: 3.1.8