Subject: 3.5m Night Log 20240322
From: cgray@apo.nmsu.edu
Date: Sat, 23 Mar 2024 12:59:18 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, March 22, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
WY04  M.Brotherton      J.McLane
UW01  S.Hawley          J.Libby-Roberts
AP01  S.Merkowitz       R.McMillan
NM09  W.Roberson        W.Roberson,J.Klusmeyer
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY04  TSPEC          19:35   20:42
UW01  ARCTIC         21:00   00:35
AP01  APOLLO         00:44   02:04
NM09  ECHELLE        02:08   06:48
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY04/R      19:25  20:55    0    0    0    0   0.0  1.5   0    0
UW01/R      20:55  00:35    0    0    0    0   0.0  3.7   0    0
AP01/R      00:35  02:10    0    0    0    0   0.0  1.6   0    0
NM09/R      02:10  06:54    0    0    0    0   0.4  4.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The night started out with thin clouds which just became thicker and thicker. Somehow we were able to punch through most of it. UW01 gave up a little early and donated their time to AP01. We had moderate seeing, which I'm surprised wasn't bad given how much the wind was changing directions.
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
--------------------------------------------------------------------------
 19:38 tcamera    438( 1426) -35  52   7.0  9.2  8.5  8.7  7.9   Ks  1.16
 21:03 arctic   362( 1129)  85  31   7.1  7.3  7.4  6.7  6.8   semrock  1.63
 02:08 ecamera    406(  -27)  -2  52   5.9  5.5  6.0  5.6  5.9   Clear  1.37
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    50    18     15   292  (WNW)    771  ptly cldy   none
     17:00    49    16     11   288  (WNW)    724  ptly cldy   none
     18:00    50    15      9   275    (W)    740 mstly clr    none
     19:00    46    13      8   270    (W)    664 mstly clr    none
     20:00    45    12      5   264    (W)    654  ptly cldy   none
     21:00    45    14      2   258  (WSW)    690  ptly cldy   none
     22:00    44    14      1   171    (S)    677  ptly cldy   none
     23:00    41    18      9   111  (ESE)    964 mstly cldy   none
     00:00    43    17     13   173    (S)    858   cloudy     none
     01:00    43    16     12   197  (SSW)    979   cloudy     none
     02:00    43    16     10   182    (S)   1178   cloudy     none
     03:00    43    16     14   179    (S)    953   cloudy     none
     04:00    42    16     12   181    (S)   1022   cloudy     none
     05:00    42    17     14   184    (S)   1170   cloudy     none
     06:00    42    15     14   189    (S)   1030 mstly cldy   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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