Subject: 3.5m Night Log 20250324
From: cgray@apo.nmsu.edu
Date: Tue, 25 Mar 2025 12:47:34 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, March 24, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU05  J.Bally           J.Bally
UW01  P.Yoachim         Z.Xu,D.Meng,Z.Liu
GS04  S.Lepine          S.Lepine
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU05  ARCTIC         19:26   22:32
CU05  KOSMOS         22:48   01:06
UW01  KOSMOS         01:06   03:26
GS04  ECHELLE        03:30   06:28
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU05/R      19:26  01:10    0    0    0    0   5.7  0.0   0    0
UW01/R      01:10  03:40    0    0    0    0   2.5  0.0   0    0
GS04/R      03:40  06:52    0    0    0    0   1.1  2.1   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
A beautiful night! It was clear with good to modest seeing, which was nice given the wind was coming from the north. The arctic filter wheel got stuck when CU05 tried to move filters before starting the night. I could have sworn I homed the wheel when I swapped them out. Either way, I reset the wheel and all was good.
                    ------- 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 arctic   296( 1196) -38  43   9.1 10.4 10.1 10.2  9.5   SII  1.17
 20:22 arctic   297( 1194) -39  43   9.3 10.3 10.1  9.7  9.6   SII  1.00
 20:27 arctic   267( 1161) -41  42   9.3 10.2 10.0  9.7  9.6   H-alph  1.41
 23:02 klow   280( 1006) 182  53   9.9  8.9  9.4  9.0  9.5   --  1.45
 01:21 kosmos   295( 1015) 310  50   9.4  8.8  9.5  8.7  8.9   --  1.16
 03:39 ecamera    331(   13) 323  54   8.2  8.0  8.8  7.9  8.1   clear  1.10
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    52    10      5   334  (NNW)    340    clear     none
     17:00    53     9     15   305   (NW)    398    clear     none
     18:00    53     8     14   328  (NNW)    475    clear     none
     19:00    53     9      3   280    (W)    401    clear     none
     20:00    48     9      5     1    (N)    293    clear     none
     21:00    49    10      7    15  (NNE)    302    clear     none
     22:00    49    11      5     0    (N)    292    clear     none
     23:00    50    12      1   347  (NNW)    212    clear     none
     00:00    50    12      5   347  (NNW)    275    clear     none
     01:00    49     9      7   300  (WNW)    290    clear     none
     02:00    49    14     10   314   (NW)    507    clear     none
     03:00    48    17      9   324   (NW)    605    clear     none
     04:00    46    17      6   356    (N)    644    clear     none
     05:00    48    18      8   351    (N)    882    clear     none
     06:00    49    17     12     2    (N)    527    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