Subject: 3.5m Night Log 20250421
From: ajt@apo.nmsu.edu
Date: Tue, 22 Apr 2025 12:54:45 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, April 21, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY03  M.Joner           M.Joner,B.Boizelle,D.Watts
BY04  S.Call            S.Call
AP02  S.Merkowitz       R.McMillan
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY03  KOSMOS         20:07   01:57
BY04  TSPEC          02:13   04:27
AP02  APOLLO         04:33   06:17
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY03/R      19:47  02:10    0    0    0    0   6.4  0.0   0    0
BY04/R      02:10  04:00    0    0    0    0   1.1  1.3   0    0
AP02/W      04:00  06:17    0    0    0    0   0.0  1.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Cleaned off seeing monitor (and all-sky camera) and adjusted seeing monitor gain settings to get it going again.
Press fans are leaking (re-opened PR 2130).
Clear night with good seeing. AP02 donated half an hour to BY04, and we got all 6 reflectors tonight with APOLLO!
                    ------- 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
--------------------------------------------------------------------------
 20:17 khigh   345( 1177) -15  68   9.9 11.3 11.1 10.8 10.1   --  0.70
 23:12 khigh   360( 1098) -77  40   9.9  9.0  9.8  9.0  9.2   --  0.68
 02:17 tcamera    292( 1268) -41  46   9.9  8.8  9.5  8.7  9.2   Ks  1.19
 04:37 APOLLO     260( 1728)  60  51   8.6  8.1  8.8  8.0  8.3   530  1.20
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    53     6     10   256  (WSW)    877 mstly clr    none
     17:00    57     8     14   223   (SW)    915 mstly clr    none
     18:00    57     7     15   242  (WSW)    766 mstly clr    none
     19:00    53     5     13   209  (SSW)    846 mstly clr    none
     20:00    49     5      9   221   (SW)   1037    clear     none
     21:00    50     5     13   200  (SSW)   1268    clear     none
     22:00    50     5     10   204  (SSW)   1230    clear     none
     23:00    50     5      9   193  (SSW)   1271    clear     none
     00:00    50     5      8   226   (SW)   1249    clear     none
     01:00    51     5      3   264    (W)   1114    clear     none
     02:00    49     6      6   262    (W)   1195    clear     none
     03:00    49     6     10   283  (WNW)   1148    clear     none
     04:00    48     7      8   258  (WSW)   1198    clear     none
     05:00    46     6      9   245  (WSW)   1342    clear     none
     06:00    46     6     10   242  (WSW)   1444    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.
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