Subject: 3.5m Night Log 20230401
From: ajt@apo.nmsu.edu
Date: Sun,  2 Apr 2023 12:46:51 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, April 01, 2023
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
WY03  M.Moe             M.Moe,A.Daly
AP01  S.Merkowitz       R.McMillan
JH02  M.Guolo           M.Guolo
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY03  ECHELLE        19:41   00:03
AP01  APOLLO         00:06   01:10
JH02  KOSMOS         01:15   05:53
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY03/R      19:32  00:10    0    0    0    0   0.0  4.6   0    0
AP01/W      00:10  01:10    0    0    0    0   0.0  1.0   0    0
JH02/R      01:10  06:42    0    0    0    0   1.3  4.2   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
We had a very clear night other than between 21:45 and 02:00. Pretty good seeing that got worse when the clouds did.
The alt drive hummed when the telescope was stopped at 104,60 during test slews. I moved it up and down and back to 60 and it didn't make any noise the second time. There were no other telescope or instrument problems.
Temperatures dropped from 11C in the afternoon to 3C by the morning. Humidity rose from 13% to 30%.
                    ------- 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
--------------------------------------------------------------------------
 18:48 ecamera    361( -270) 280  32  10.0  8.4  8.7  8.3  7.4   ND3  1.23
 19:45 ecamera    417( -293) 247  78  10.0  7.4  7.9  7.2  7.1   Clear  0.99
 23:11 APOLLO     350( 1391) 298  62  10.0  6.6  7.1  6.4  7.2   530  1.80
 00:20 klow       352(  681) 198  37  10.0  6.5  7.2  6.6  6.7   --  1.87
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00                 17   201  (SSW)    785    clear     none
     17:00                 16   225   (SW)    909    clear     none
     18:00                 12   247  (WSW)    970    clear     none
     19:00                 17   233   (SW)    940    clear     none
     20:00                 14   209  (SSW)   1265    clear     none
     21:00                 13   235   (SW)   1469 mstly clr    none
     22:00                 12   218   (SW)   1431  ptly cldy   none
     23:00                 12   226   (SW)   1149  ptly cldy   none
     00:00                 12   227   (SW)   1051  ptly cldy   none
     01:00                 12   238  (WSW)    981  ptly cldy   none
     02:00                 15   211  (SSW)   1208    clear     none
     03:00                 13   213  (SSW)   1039    clear     none
     04:00                 13   241  (WSW)   1078    clear     none
     05:00                 17   259    (W)    700    clear     none
     06:00                 23   254  (WSW)    699    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.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.4.2
Current HUB version: v20171231_01
Current TUI version: a>