Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, May 27, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UW01  P.Yoachim         Z.Liu,D.Meng          
WY01  M.Brotherton      M.Brotherton          
JH03  N.Oliveros-Gomez  N.Oliveros-Gomez      

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW01  KOSMOS         20:24   23:30   
WY01  KOSMOS         23:32   00:59
JH03  NICFPS         01:13   04:46

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW01/R      20:12  23:30    0    0    0    0   0.0  3.3   0    0
WY01/R      23:30  01:10    0    0    0    0   0.0  1.7   0    0
JH03/R      01:10  05:49  1.0    0    0    0   0.8  2.8   0    0

note: scheduled times listed include instrument change time

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

Nice and clear night up until about 0400 when light cloud started rolling in. Gradually got heavier until science target disappeared around 0445. 

No telescope or instrument issues tonight.

                    ------- 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
--------------------------------------------------------------------------
20:54 kosmos     326( 1136) 235  69  13.2 15.2 14.9 14.8 13.1   --    0.98 
01:23 NICFPS     476( 1499) -35  69  10.8 11.2 11.9 10.8 10.8   MK-J  1.07

               ------------- WEATHER LOG ----------------

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    63    29     12   251  (WSW)   1806    clear     none 
     17:00    64    24     19   207  (SSW)   1520    clear     none 
     18:00    63    27     14   230   (SW)   1665    clear     none 
     19:00    61    25     10   240  (WSW)   1675    clear     none 
     20:00    56    25      9   216   (SW)   1929    clear     none 
     21:00    56    25     10   190    (S)   2000    clear     none 
     22:00    55    25      8   196  (SSW)   2078    clear     none 
     23:00    56    22     13   209  (SSW)   1869    clear     none 
     00:00    56    21      6   189    (S)   1849    clear     none 
     01:00    52    32      8   172    (S)   1622    clear     none 
     02:00    51    29      2   129   (SE)   1752    clear     none 
     03:00    52    32      6   125   (SE)   1636    clear     none 
     04:00    51    32     17   126   (SE)   1644  ptly cldy   none 
     05:00    52    32     16   148  (SSE)   1605  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: 3.1.8