Subject: 3.5m Night Log 20240407
From: ajt@apo.nmsu.edu
Date: Mon,  8 Apr 2024 13:04:11 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, April 07, 2024
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM08  K.Sanderson       K.Sanderson
CU01  A.Feinstein       A.Townsend
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM08  KOSMOS         21:09   00:55
CU01  ARCTIC         01:13   06:13
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM08/R      19:37  01:10    0    0    0    0   5.6  0.0   0    0
CU01/W      01:10  06:33    0    0    0    0   5.4  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
DIS was unresponsive at checkout and I couldn't access disicc (PR 2197)
Thin clouds passing through but weren't disruptive until the end of the night. We had pretty good seeing though!
We didn't open until about 21:00 while NM08 was taking cals.
Fiducial error too large in az at 00:56 ish, did an ms.dump. Probably due to large slew in opposite direction after tracking setting target for a long time.
B-half observer was unable to observe due to local power outages, but was able to provide instructions for service observing.
Happy solar eclipse day!
                    ------- 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
--------------------------------------------------------------------------
 20:19 kosmos   150(  710)  69  38   2.2  4.1  3.9  4.2  2.6   --  1.29
 00:40 arctic   450(  915) 130  79   3.4  1.5  3.0  2.2  2.6   SDSS_i  0.71
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    42     2     16   268    (W)    475 mstly clr    none
     17:00    43    -2     14   263    (W)    560 mstly clr    none
     18:00    44    -1     12   264    (W)    584  ptly cldy   none
     19:00    39    -1     10   234   (SW)    609  ptly cldy   none
     20:00    37    -3     19   226   (SW)    783 mstly clr    none
     21:00    36     1     15   213  (SSW)    745 mstly clr    none
     22:00    36     2     14   235   (SW)    923 mstly clr    none
     23:00    38    -2     10   238  (WSW)    920 mstly clr    none
     00:00    37     4     14   259    (W)    931 mstly clr    none
     01:00    37     7     11   265    (W)    981 mstly clr    none
     02:00    38     6     11   260    (W)   1012  ptly cldy   none
     03:00    38     8      7   257  (WSW)   1089  ptly cldy   none
     04:00    37     9      8   261    (W)   1110  ptly cldy   none
     05:00    38     8      9   233   (SW)   1153  ptly cldy   none
     06:00    37     9      8   258  (WSW)   1133  ptly 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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