Subject: 3.5m Night Log 20230512
From: cgray@apo.nmsu.edu
Date: Sat, 13 May 2023 12:01:52 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, May 12, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
NM05  K.Sanderson       K.Sanderson
UV02  J.Davidson        J.Davidson, S.Majewski
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM05  KOSMOS         20:47   00:18
UV02  DSSI           04:26   05:42
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM05/R      20:02  01:10   1.6   0    0    0   3.5  0.0   0    0
UV02/R      01:10  05:57   1.5  2.0   0    0   0.0  1.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
The arctic quad was brought back during afternoon checkouts.
The night started with elevated dust. Again. However, we only had a short delay before opening. Things were mostly clear until storms started blowing out from Texas and the clouds came in. I thought we were totally shot for the night when we closed a little after midnight, but we were able to get a sucker hole! UV02 was able to get a little bit of time before dust and humidity became too high.
                    ------- 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
--------------------------------------------------------------------------
 20:53 kosmos   330( 1076) 209  78  10.0 16.0 15.9 16.0 14.4   --  1.10
 20:53 kosmos   330( 1076) 209  78  10.0 16.0 15.9 16.0 14.4   --  1.10
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00                  7   267    (W)   3608    clear     dust
     17:00                 10   241  (WSW)   3590    clear     dust
     18:00                 12   261    (W)   3659 mstly clr    dust
     19:00                  7   263    (W)   3845 mstly clr    dust
     20:00                  6   269    (W)   3960 mstly clr    dust
     21:00                  1   172    (S)   4097 mstly clr    dust
     22:00                  1   218   (SW)   3907  ptly cldy   dust
     23:00                  2   334  (NNW)   3799  ptly cldy   dust
     00:00                  9    72  (ENE)   3439  ptly cldy   dust
     01:00                 10    87    (E)   4306 mstly cldy   dust
     02:00                 15   119  (ESE)   6118 mstly cldy   dust
     03:00                 26   128   (SE)   3516 mstly cldy   none
     04:00                 16   113  (ESE)   2709  ptly cldy   none
     05:00                 18    88    (E)   2943  ptly cldy  humid
     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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