Subject: 3.5m Night Log 20250418
From: dembicky@apo.nmsu.edu
Date: Sat, 19 Apr 2025 12:26:23 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, April 18, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV01  Y.Zhou            Y.Zhou, J.Davidson
NM09  A.Smith           A.Peck, E.Nielsen
BY04  S.Call            S.Call
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV01  ARCTIC         --:--   --:--
NM09  ECHELLE        03:15   04:45
BY04  TSPEC          04:50   06:20
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV01/R      19:44  01:10   5.4   0    0    0   0.0  0.0   0    0
NM09/R      01:10  04:50    0   2.1   0    0   0.0  1.6   0    0
BY04/R      04:50  06:20    0    0    0    0   0.0  1.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
Dust kept us closed until around 03:15 when I was able to finally open.
No problems 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
--------------------------------------------------------------------------
 03:29 ecamera    -84( -632) 166  61   2.1  3.2  5.6  3.2  2.3   ND1  1.36
 04:06 ecamera    148( -468) 235  50   1.5  1.6  4.0  2.2  1.8   ND1  1.72
 04:55 tcamera    396(  992) 323  58   1.2  0.9  2.5  1.3  1.3   Ks  1.18
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    49     7     44   265    (W) 103643  ptly cldy   dust
     17:00    50     5     42   258  (WSW)  42707  ptly cldy   dust
     18:00    48     3     37   248  (WSW)  53314  ptly cldy   dust
     19:00    46     2     24   259    (W)  44647    clear     dust
     20:00    44     3     29   253  (WSW)  22965    clear     dust
     21:00    43     5     27   254  (WSW)  13848    clear     dust
     22:00    41     6     21   223   (SW)  32983    clear     dust
     23:00    40     8     31   236   (SW)  63111    clear     dust
     00:00    39     9     28   239  (WSW)  25787    clear     dust
     01:00    38    10     19   219   (SW)  14699    clear     dust
     02:00    37    12     14   242  (WSW)   6924    clear     dust
     03:00    36    17     16   249  (WSW)   3732    clear     none
     04:00    35    20     16   243  (WSW)   2698    clear     none
     05:00    33    20     19   238  (WSW)   2611    clear     none
     06:00    34    18     15   226   (SW)   2461    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  ----------
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Current HUB version: v20171231_01
Current TUI version: 3.1.8