Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, April 23, 2026

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

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
JH03  NICFPS         --:--   --:--   
UW01  KOSMOS         00:50   04:36
WY01  KOSMOS         04:36   05:55

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
JH03/R      19:48  01:10    0   5.4   0    0   0.0  0.0   0    0
UW01/R      01:10  04:35    0    0    0    0   2.0  1.4   0    0
WY01/R      04:35  06:15    0    0    0    0   1.7  0.0   0    0

note: scheduled times listed include instrument change time

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

My WY observers were having issues scp'ing data tonight.  They were getting a 'connection reset' error.  They also said that they needed to log in with uwyoobserver (extra 'o') to get it to ask for a password, then it still denied them.  Separate email sent to IT staff, as this is a similiar issue we saw back in Feb 2026 and in 2022.

When taking my echelle IOL images I got the following error again.  I believe this is the same one Harry got the other night.

2026-04-24 12:15:23 APO.Jack-ObsA 192 echelle f text="error from motor controller: '\x15[Invalid Command]\r>'"

I re-did just the wavecal from the script and the cal mirror moved fine the 2nd attempt.

                    ------- 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
--------------------------------------------------------------------------
 01:03 kosmos   400(  871)  40  57   7.2  7.8  8.3  7.7  7.2   --  1.59
 04:45 kosmos   500(  877) -113  36   6.1  5.5  6.2  5.5  5.8   --  1.16

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    54    13     19   245  (WSW)   1641   cloudy     none 
     17:00    52    11     16   244  (WSW)   1529   cloudy     none 
     18:00    51    11     18   254  (WSW)   2416   cloudy     none 
     19:00    50     9     22   259    (W)   2416   cloudy     none 
     20:00    49    11     24   267    (W)   2065   cloudy     none 
     21:00    48    12     16   269    (W)   2476   cloudy     none 
     22:00    47    13     15   269    (W)   2594   cloudy     none 
     23:00    47    13     18   290  (WNW)   1789   cloudy     none 
     00:00    46    13     18   274    (W)   1583 mstly cldy   none 
     01:00    45    11     26   275    (W)   1367  ptly cldy   none 
     02:00    45     8     29   292  (WNW)   1431 mstly clr    none 
     03:00    44     8     23   296  (WNW)   1465    clear     none 
     04:00    43     8     19   294  (WNW)   1498    clear     none 
     05:00    43     7     21   289  (WNW)   1565    clear     none 
     06:00    43     5     14   313   (NW)   1576    clear     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