Subject: 3.5m Night Log 20250715
From: ajt@apo.nmsu.edu
Date: Wed, 16 Jul 2025 12:19:22 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, July 15, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
EN02  B.Ketzeback       A.Townsend,R.McMillan
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN02  ARCTIC         20:30   21:10
EN02  NA2GDR         21:10   21:15
EN02  ARCTIC         20:30   21:10
EN02  NA2GDR         21:10   21:15
EN02  ECHELLE        21:20   01:00
EN02  NA2GDR         01:05   03:30
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
EN02/W      20:21  05:58    0   2.5   0    0   3.0  4.1   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Thin clouds but mostly clear and calm with sub-arcsecond seeing until the dust rose at 03:30.
20:32 motion error on initial inst change after test slews
Internal ThAr echelle comp lamp very faint.
Showfilltimes at start of night.
EN tasks tonight:
- ARCTIC flats out of a sense of optimism for potential throughput
- NA2 Guider flat check: looks so much better! Thank you Cary
- Echelle pointing check/adjustment
- Echelle instrument testing with the new icc
- Training for Amanda on manual pointing fixes
- Wiki documentation updates (notes about engineering pages and pointing fixes updated with manual method)
- NA2 Guider instrument block
- Partial pointing model (implemented) before dust spiked up, minor changes to yesterday's
- SecPistCoeff adjusted for slightly higher instrumet focus values
                    ------- 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
--------------------------------------------------------------------------
 22:09 ecamera    193(  294) -55  79  16.8 17.2 17.3 16.9 16.6   ND1  0.81
 02:27 guider   138( 1286) -118  54  16.1 14.8 15.3 14.5 15.2   Red_ND2  0.90
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    70    48     11   251  (WSW)   1304  ptly cldy   none
     17:00    69    47      5   204  (SSW)   1189  ptly cldy   none
     18:00    70    47      7   239  (WSW)   1363  ptly cldy   none
     19:00    66    46      8   200  (SSW)   1396  ptly cldy   none
     20:00    63    45      9   184    (S)   1239 mstly clr    none
     21:00    63    43     11   182    (S)   1159 mstly clr    none
     22:00    63    43      7   181    (S)   1225 mstly clr    none
     23:00    63    41      8   183    (S)   1036    clear     none
     00:00    62    42      6   172    (S)   1053    clear     none
     01:00    60    43     13   142   (SE)   1141    clear     none
     02:00    59    44     13   177    (S)   1073 mstly clr    none
     03:00    59    42      8   176    (S)   1154 mstly clr    dust
     04:00    62    43      8   223   (SW)   4851 mstly clr    dust
     05:00    58    45      5   246  (WSW)   7070 mstly clr    dust
     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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Current HUB version: v20171231_01
Current TUI version: 3.1.8