Subject: 3.5m Night Log 20240224
From: mcroom@apo.nmsu.edu
Date: Sun, 25 Feb 2024 14:10:11 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, February 24, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UV04  S.Majewski        J.Davidson, R.Wilson
AP01  S.Merkowitz       R.McMillan
UV04  S.Majewski        J.Davidson, R.Wilson
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV04  DSSI           18:26   23:05
AP01  APOLLO         23:08   23:45
UV04  DSSI           23:55   06:28
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV04/O      18:05  23:10    0    0    0    0   0.2  4.9   0    0
AP01/R      23:10  00:10    0    0    0    0   0.0  1.0   0    0
UV04/O      00:10  06:28    0    0    0    0   0.0  6.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: M.Croom,J.Dembicky
The night started with mostly cloudy conditions but still usable for DSSI. The skies mostly cleared when Apollo was active and remained that way with moderate (1.5") seeing.
Mark received more training on ARCSAT when we had to resolve an issue by restarting the software. We also recentered the field and adjusted the guider orientation and offset pointings.
DSSI operated with no issues aside from a short-lived appearance of unsteadiness. Initially suspecting wind effects, the telemetry showed no unusual loadings and the winds were within limits so atmospheric turbulence was deemed more likely. With 231 observations, DSSI team had a pretty productive night aside from the early clouds.
                    ------- 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
--------------------------------------------------------------------------
 18:43 dssi   350( 1351) 244  73   5.3  6.5  6.3  6.1  5.6   692nm  0.70
 23:14 APOLLO     400( 1739)  69  53   5.4  5.4  6.0  5.6  5.6   530  1.20
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    43    15     11   336  (NNW)    569  ptly cldy   none
     17:00    42    14      5   289  (WNW)    604  ptly cldy   none
     18:00    41    12     10   336  (NNW)    622  ptly cldy   none
     19:00    42    12     12   269    (W)    783  ptly cldy   none
     20:00    41    15     11   242  (WSW)    905  ptly cldy   none
     21:00    42    14     13   263    (W)    888  ptly cldy   none
     22:00    42    12     12   267    (W)    852  ptly cldy   none
     23:00    43    10     10   268    (W)    589 mstly clr    none
     00:00    43    13     23   288  (WNW)    397 mstly clr    none
     01:00    43    15     15   276    (W)    322 mstly clr    none
     02:00    41    20     17   264    (W)    310 mstly clr    none
     03:00    42    19     18   290  (WNW)    423 mstly clr    none
     04:00    41    18     16   295  (WNW)    508 mstly clr    none
     05:00    41    18     15   309   (NW)    486 mstly clr    none
     06:00    41    18     11   293  (WNW)    415 mstly clr    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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Current HUB version: v20171231_01
Current TUI version: 3.1.3