Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, August 04, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UV02  A.Verbiscer       A.Verbiscer           
NM01  N.Chanover        N.Chanover,M.Skrutskie,R.McMillan,B.Ketzeback,C.Gray
NM07  E.Serviss         E.Serviss,E.Nielsen   

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV02  ARCTIC         20:08   23:29   
NM01  sCMOS          23:41   01:01
NM07  ECHELLE        01:17   05:34

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV02/R      20:08  23:35    0    0    0    0   3.1  0.4   0    0
NM01/O      23:35  01:10    0    0    0    0   0.0  1.6   0    0
NM01/O      01:10  02:00    0    0    0    0   0.0  0.8   0    0
NM07/R      02:00  06:11    0    0    0    0   0.0  4.2   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend

We had decent weather for most of A-half, right up until we wanted to observe the moon. Then the clouds and seeing got worse and worse. Radar threatened to bring storms our way but none of them actually got close enough to bother us too much (other than the clouds). B-half observations were difficult through the clouds, but we stayed on sky and got our photons. 

NM01 finished up early and handed over to NM07; since both are NMSU programs I did not adjust observation times. 

At 03:08, obsA  disconnected from TUI. I was able to reconnect immediately. TUI on my laptop (on the APO-unifi network) did not disconnect. Dome mac seems to have been disconnected as well. 

                    ------- 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
--------------------------------------------------------------------------
 20:53 arctic   510( 1627)  51  61  21.2 21.6 22.1 21.3 21.1   SDSS_r  0.82
 01:28 ecamera    348(  302) -71  44  17.8 17.9 18.6 17.8 18.1   Clear  1.99


                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    74    41      2   158  (SSE)   1605  ptly cldy   none 
     17:00    80    42     15   215   (SW)   1529  ptly cldy   none 
     18:00    73    40      4   185    (S)   1497  ptly cldy   none 
     19:00    72    40     10   143   (SE)   1368  ptly cldy   none 
     20:00    71    38     12   149  (SSE)   1312 mstly clr    none 
     21:00    70    38     14   170    (S)   1335    clear     none 
     22:00    68    39     20   126   (SE)   1716    clear     none 
     23:00    66    37     18   126   (SE)   1876 mstly clr    none 
     00:00    66    36      7   156  (SSE)   1645 mstly cldy   none 
     01:00    64    36      7   183    (S)   1639 mstly cldy   none 
     02:00    64    40     14    18  (NNE)   2360 mstly cldy   none 
     03:00    65    39      8     4    (N)   2150 mstly cldy   none 
     04:00    66    38      1   102  (ESE)   1900  ptly cldy   none 
     05:00    66    37      4   180    (S)   1678 mstly clr    none 
     06:00    66    37      6   110  (ESE)   1571 mstly clr    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: