From: Russet McMillan
Subject: 3.5m Night Log 20071224
Date: Tue, 25 Dec 2007 05:48:43 -0700 (MST)
                         Apache Point Observatory
                         3.5m Telescope Night Log
                         Monday, December 24, 2007
                                                           ACTUAL
  ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
 --------------------------------------------------------------------
 M.Klaene         R.McMillan            SPIcam, Agile,  17:30  05:30
                                        S-H, Na2gdr
   INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
  I/ROW/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 EN01/W       18:01 06:06    0    0    0    0    0  12.1   0    0    0
   note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 We had photometric skies with moderate to bad seeing tonight.
 At the start of the night, three of the four temperature sensors on
 NIC-FPS were showing unacceptably high values even though the
 instrument had been filled four times in the previous 24 hours.
 After consultation with the NIC-FPS folks, we decided to warm the
 instrument in order to pump it and replace the moribund ion pump.
 This will take several days (starting on Dec 26) and displace some
 scheduled NIC-FPS observations.
 I accomplished the high-priority engineering tasks, notably
 observations of photometric standards with Agile; some of them were
 troubled by bad seeing, but I hope still usable.  I also did some
 tracking tests in different parts of the sky and found tracking
 problems in the azimuth direction in some places, the altitude
 direction in others.  I would be interested to repeat these tests
 after fresh pointing model.
file            az   alt    comment
tracking.0001   65   58     slightly longer in az dir (less than 2:1)
tracking.0002   0    62     slightly longer in az dir (less than 2:1)
tracking.0003   -40  55     longer in az dir (more than 2:1)
tracking.0004   -48  53     tweaked focus; longer in az dir (about 2:1)
                 focus sweep
tracking.0005   240  63     longer in alt dir (about 2:1)
tracking.0006   190  78     much longer & irreg in alt direction
                                   (more than 2:1)
tracking.0007   125  61     not elongated (poor seeing)
tracking.0008   180  61     slightly longer in alt dir (less than 2:1),
                                    poor seeing
 Seeing was too poor to do a Shack-Hartmann altitude sweep, but I did
 manage to get a simple collimation measurement, and made an
 adjustment based on that.  Then I took a pointing model to correct
 the change caused by the collimation.  The pointing model results
 were interesting and had something to say about the state of the
 azimuth drive, but I'll have to work on the analysis tomorrow when
 I'm more awake.
 TUI on Obs1 hung up twice (once when opening the Spicam focus
 script, once when I purged some programs from the Permissions
 window), but I believe it was the fault of the machine rather than
 TUI (the same version of TUI on my laptop, also running MacOSX, was
 fine).  After the second hang, Obs1 kept complaining about not being
 able to find a home disk even after multiple reboots.  Because of
 this I misplaced focus information for the night.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt FWHM
 ----------------------------------------------------------------------
                 ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
 ---------------------------------------------------------------------
     16:00    34    11     12   355    (N)    285    clear     none
     17:00    37     5      7   325   (NW)    196    clear     none
     18:00    35    10     11   353    (N)    163    clear     none
     19:00    40     4     18   304   (NW)    157    clear     none
     20:00    37    14     14   292  (WNW)     75    clear     none
     21:00    37    12     12   265    (W)    121    clear     none
     22:00    38    13     18   279    (W)     54    clear     none
     23:00    38    11     22   286  (WNW)     32    clear     none
     00:00    36    11     13   279    (W)    142    clear     none
     01:00    36    12     11   266    (W)    197    clear     none
     02:00    35    12     17   264    (W)    280    clear     none
     03:00    34    11     18   268    (W)    342    clear     none
     04:00    34    10     15   271    (W)    312    clear     none
     05:00    34    11     15   264    (W)    332    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 STATUS
      Telescope drives operational. Current TCC version: 2.9.1
      Current TUI version: TUI 1.4.3