Subject: 3.5m Night Log 20210516
From: cgray@apo.nmsu.edu
Date: Mon, 17 May 2021 11:50:50 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, May 16, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
JH01  Z.Rustamkulov     Z.Rustamkulov
BY01  B.Boizelle        B.Boizelle
WY02  A.Cavanaugh       A.Cavanaugh
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
JH01  ARCTIC         20:05   01:04
BY01  TSPEC          01:18   02:40
WY02  TSPEC          02:40   05:40
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
JH01/R      20:05  01:10    0    0    0   0.1  0.6  4.4   0    0
BY01/R      01:10  02:40    0    0    0    0   1.5  0.0   0    0
WY02/R      02:40  05:54    0    0    0    0   3.2  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
A clear sky all night!! But after taking sky flats, we had an altitude oscillation at 20:31 at az 74, alt 34. I ran through several large alt slews and then we were fine the rest of the night!
Focus was not taken for JH01 as they were using the diffuser and wanted to start on their target ASAP.
                    ------- FAILURE LOG -------
              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
JH01    R        T/H      20:31   20:36   altitude oscillations
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 00:25 tcamera    460( 1124) -143  59  10.8 10.9 11.6 10.8 10.8   Ks  1.22
 01:44 tcamera    540( 1152) -69  52   9.4  9.7 10.3  9.6  9.5   Ks  1.24
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    62    19     18   223   (SW)   1205    clear     none
     17:00    64    19     23   218   (SW)   1018    clear     none
     18:00    60    18     20   218   (SW)   1488    clear     none
     19:00    59    16     26   235   (SW)   1709    clear     none
     20:00    56    12     22   217   (SW)   3004    clear     none
     21:00    55    11     14   228   (SW)   2785    clear     none
     22:00    54    11     19   262    (W)   1309    clear     none
     23:00    54    10     10   260    (W)   1255    clear     none
     00:00    53    11     19   257  (WSW)   1067    clear     none
     01:00    52    11     14   266    (W)   1164    clear     none
     02:00    51    14     19   263    (W)    976    clear     none
     03:00    49    13      8   271    (W)   1018    clear     none
     04:00    48    13     17   289  (WNW)   1124    clear     none
     05:00    46    14     22   287  (WNW)   1717    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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