Subject: 3.5m Night Log 20250515
From: ajt@apo.nmsu.edu
Date: Fri, 16 May 2025 13:03:37 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, May 15, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW06  A.Heinze          A.Heinze
NM02  C.Gray            C.Gray
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW06  ARCTIC         21:07   04:00
NM02  ECHELLE        04:03   05:55
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW06/R      20:04  04:00    0    0    0    0   3.0  5.0   0    0
NM02/R/T    04:00  05:55    0    0    0    0   0.0  1.9   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
NM02 called in ToO for 04:00 to sunrise.
Motion error right after inst change to echelle on first slew, downward in the east at about 73 alt 04:04.
A little bit of marginally high dust at the start of the night but we didn't open because we were doing in-dome cals, not due to the weather. We also had thin clouds blowing through most of the night. Otherwise good weather and we were able to observe all 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
--------------------------------------------------------------------------
 21:12 arctic   264( 1209) -77  55  10.7 11.4 11.7 11.4 10.6   CUVR  1.03
 21:51 arctic   400( 1286) -84  47  10.0 10.1 10.8  9.9  9.8   CUVR  1.08
 02:07 arctic   274( 1106) -46  36   9.0  8.8  9.5  8.7  8.9   CUVR  1.40
 03:30 arctic   237( 1039)  40  31   8.8  8.1  8.7  7.8  8.5   CUVR  1.42
 04:10 ecamera    302(  -15)  85  46   9.1  7.9  8.6  7.9  8.3   ND2  0.99
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    59     8     18   253  (WSW)   2407 mstly clr    none
     17:00    60     7     23   267    (W)   3198 mstly clr    none
     18:00    56     7     20   267    (W)   2914 mstly clr    none
     19:00    56     5     19   265    (W)   3283 mstly clr    none
     20:00    52     1     18   258  (WSW)   2993 mstly clr    none
     21:00    51     2     19   266    (W)   3391 mstly clr    none
     22:00    50     1     16   286  (WNW)   2353 mstly clr    none
     23:00    50     2     15   276    (W)   2195 mstly clr    none
     00:00    50     2     17   295  (WNW)   1861 mstly clr    none
     01:00    50     2     19   313   (NW)   1739 mstly clr    none
     02:00    49     2     12   311   (NW)   1858 mstly clr    none
     03:00    48     6     13   324   (NW)   2032    clear     none
     04:00    48     5     18   311   (NW)   1896    clear     none
     05:00    48     5      9   305   (NW)   2029 mstly clr    none
     06:00    47     5      8   278    (W)   1868 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.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.4.2
Current HUB version: v20171231_01
Current TUI version: 3.1.8