Subject: 3.5m Night Log 20210710
From: decolib@apo.nmsu.edu
Date: Sun, 11 Jul 2021 11:34:44 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, July 10, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS03  S.Lepine          N.Hejazi
CU01  N.Schneider       C.Schmidt
WY03  C.Kobulnicky      C.Kobulnicky
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS03  ECHELLE        --:--   --:--
CU01  ECHELLE        --:--   --:--
WY03  ECHELLE        01:52   05:00
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS03/R      20:23  23:45    2.5  0.9  0    0   0.0  0.0   0    0
CU01/R      23:45  01:40    1.9  0    0    0   0.0  0.0   0    0
WY03/R      01:40  05:55    0.2  0    0    0   4.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: D.DeColibus
Motion error on the altitude drive during afternoon checkout, when slewing from 165,80(mount) to 55,45(mount). The error occurred at about 19:07, at an altitude of 68.3.
Heavy cloud cover moved in before sunset and stuck around for basically all of A-half. It slowly decreased after about 1 AM, thinning out just enough that WY03 could get on sky around 2 AM. We observed the rest of the night and closed up at 05:00.
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
--------------------------------------------------------------------------
 01:48 ecamera    409(   64) 103  80  18.5 17.3 17.5 17.4 17.5   ND2  1.08
 04:43 ecamera    478(  156) -131  49  18.1 17.5 18.0 17.4 17.7   Clear  0.92
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    70    41      4   252  (WSW)    761  ptly cldy   none
     17:00    73    43      9   187    (S)    734 mstly cldy   none
     18:00    76    44      7   247  (WSW)    711 mstly cldy   none
     19:00    70    30      5   258  (WSW)    694   cloudy     none
     20:00    67    37      9    68  (ENE)    780   cloudy     none
     21:00    64    37     17    67  (ENE)    779   cloudy     none
     22:00    62    32     18    61  (ENE)    615   cloudy     none
     23:00    61    32     18    67  (ENE)    614   cloudy     none
     00:00    61    32     15    72  (ENE)    573   cloudy     none
     01:00    64    32     12    54   (NE)    557 mstly cldy   none
     02:00    66    32      3   346  (NNW)    612  ptly cldy   none
     03:00    65    31      1   238  (WSW)    510  ptly cldy   none
     04:00    66    31      4   331  (NNW)    560  ptly cldy   none
     05:00    64    31      8   345  (NNW)    577 mstly clr    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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