Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, April 02, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
EN01  B.Ketzeback       J.Dembicky, R.McMillan                                              

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN01  ECHELLE        21:45   23:50   
EN01  NA2gdr         01:10   01:40
EN01  Shack          01:40   02:30
EN01  NA2gdr         02:30   05:36

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
EN01/R     19:33  06:40    0    0    0    0   0.7 10.4   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky

We had some clouds at sunset so I didn't open, plus it was an engineering night.

I took some tour vidoe of the observing level as discussed in today's tech-o-con.  My phone battery ran out when I was doing the intermediate level, so I will do that and control room tomorrow.

Engineering tonight, separate report sent out to Engineering staff.

                    ------- 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
--------------------------------------------------------------------------
 21:56 ecamera    484(   28) 134  74   8.6  9.6  9.7  9.5  8.4   ND1  0.85
 02:20 shack   400( 1561) 133  61   7.9  7.2  7.9  7.1  7.2   --  1.30
 02:36 NA2gdr 35966(35966)  61  51   7.4  7.0  7.8  6.9  7.1   clear  1.49

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    54    27     13   213  (SSW)   1502 mstly cldy   none 
     17:00    55    24     16   245  (WSW)   1447 mstly cldy   none 
     18:00    51    24     19   244  (WSW)   1316 mstly cldy   none 
     19:00    49    24     18   247  (WSW)   1369 mstly cldy   none 
     20:00    47    24     11   250  (WSW)   1331 mstly cldy   none 
     21:00    48    22     20   264    (W)   1309  ptly cldy   none 
     22:00    47    23     17   256  (WSW)   1251  ptly cldy   none 
     23:00    48    24     16   260    (W)   1252  ptly cldy   none 
     00:00    47    23     16   268    (W)   1205  ptly cldy   none 
     01:00    47    22     13   267    (W)   1072  ptly cldy   none 
     02:00    46    22     18   267    (W)   1297  ptly cldy   none 
     03:00    46    23     15   283  (WNW)   1231  ptly cldy   none 
     04:00    45    25     16   280    (W)   1332  ptly cldy   none 
     05:00    45    26     24   282  (WNW)   1436  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