Subject: 3.5m Night Log 20230824
From: dembicky@apo.nmsu.edu
Date: Fri, 25 Aug 2023 20:21:22 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, August 24, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU05  Z.Berta-Thompson  Z.Berta-Thompson
NM06  K.Sanderson       K.Sanderson
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU05  KOSMOS         19:50   21:20
NM06  DIS            --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU05/R      19:47  01:10   0.8  3.1   0    0   0.0  1.5   0    0
NM06/R      01:10  06:25   5.2   0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
on my initial slew, slip detected at alt 64.  Motion error at 28.5
slit detected at 23.1 when I finsihed the initial slew after the motion error.
slip detected going up at around 50 deg
Slip detected going down at:
56.3
36.1
27.0
going up (@60 az)
22.0
28.1
37.4
43.8
62.9
down (at 60 az)
73.0 thru 54.4
51.2
44.8
29.0
24.2
We opened for about an hour and a half, then the threat of rain, clouds, and
humidity closed us for the remainder of the night.
                    ------- 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
--------------------------------------------------------------------------
 20:23 kosmos   472( 1693) 186  62  14.9 18.6 17.8 18.2 17.4   —  1.36
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    63    55     12   225   (SW)    964  ptly cldy   none
     17:00    62    54      5   261    (W)    980  ptly cldy   none
     18:00    64    54      2   249  (WSW)   1009  ptly cldy   none
     19:00    63    55      6   246  (WSW)   1055  ptly cldy   none
     20:00    59    52     10   121  (ESE)   1079 mstly clr    none
     21:00    58    54     15   134   (SE)   1259 mstly clr   humid
     22:00    58    54     14   133   (SE)         ptly cldy  humid
     23:00    59    53      8   184    (S)         ptly cldy   none
     00:00    57    54     12   154  (SSE)        mstly clr   humid
     01:00    56    56     16   142   (SE)         ptly cldy  humid
     02:00    56    56      9   140   (SE)        mstly cldy  humid
     03:00    56    55      8   172    (S)         ptly cldy  humid
     04:00    56    54      5   185    (S)         ptly cldy  humid
     05:00    55    53      6   194  (SSW)          cloudy    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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