From: Russet McMillan
Subject: 3.5m Night Log 20060716
Date: Mon, 17 Jul 2006 05:08:32 -0600 (MDT)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                         Sunday, July 16, 2006
                                                         ACTUAL
  ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 B.Lawton        C.Churchill             DIS            20:50  01:05
 M.Klaene        R.McMillan              Echelle,S-H,   01:10  04:55
                                         APOLLO, DIS
   INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
  I/ROW/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 ----------------------------------------------------------------------
 NM05/R       21:14 01:10    0    0    0    0   2.8  1.2   0    0    0
 EN01/O       01:10 05:06    0    0    0    0    0   3.9   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: G.Saurage
Thin clouds in area at sunset, but radar clearing out for the county.
Opened on time.
DIS slitviewer locked up for the observer. After a brief discussion with
observer about symptoms, I issued a hub startNubs for dcamera and dcam,
and then he restarted his guider and all seemed well. Since I don't know
the exact cause I did not write it up as a PR. Seeing was fair at
0.9/1.0". Stayed mostly clear all 1st half.
 2nd Half Observing Specialist: R.McMillan
 Second half started with very, very thin clouds lurking around, just
 short of photometric.  The only high-priority task on the list was
 DIS throughput, and I elected to wait in hopes that the almost-clear
 skies would become completely clear.
 So we started with echelle observations of a high-priority target,
 during which we warmed up the APOLLO laser for a trouble-shooting
 test.  The trouble-shooting test failed; the critical timing of
 outgoing light is still broken.
 Next I switched to the Shack-Hartmann for a quick check of
 collimation in case the secondary vanes had popped in the past
 week.  I found a small change, but not significant enough to try to
 correct.  I also used the Shack-Hartmann video to check tracking in
 multiple places around the sky, since I had found bad tracking last
 week and didn't have time to do a thorough check.  I found a little
 wobbliness at high southern transits (our worst trouble spot), but
 tuning adjustments didn't seem to make much difference.  Everywhere
 else showed very nice tracking.
 During the Shack-Hartmann work, my gamble with the weather turned
 out to be a mistake.  Wispy clouds moved in and the sky went from
 almost-not-quite-photometric to definitely not photometric.  I tried
 to get throughput data on BD+28 before the clouds got there, only to
 have the telescope track into the limit.  By the time the star was
 out of the zone of avoidance, the clouds had moved in.  I took data
 anyway, and it may be useful as a quality check of the new gratings
 -- but not as absolute throughput data.  The sky didn't improve
 again before twilight.
                       ------- FAILURE LOG -------
   PROG   INST   FAILURE MODE     TIME
        (SEDFNVOG)    TI/SHU   START  FINISH  DESCRIPTION
  -----------------------------------------------------------------------
                ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 20:50   DISslit    -50(1221) -20  57   16.1/17.6  138  13   --    0.9
 22:20   DISslit     0(1200)   -5  60   15.9/16.2  148  16   --    1.0
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:00    67    45      5   187    (S)    551  ptly cldy   none
     17:00    66    44      7   174    (S)    531  ptly cldy   none
     18:00    66    45     10   129   (SE)    524  ptly cldy   none
     19:00    64    45      7   163  (SSE)    569 mstly clr    none
     20:00    61    43     14   134   (SE)    571 mstly clr    none
     21:00    61    43     13   132   (SE)    601 mstly clr    none
     22:00    61    44     15   138   (SE)    642 mstly clr    none
     23:00    60    44     13   157  (SSE)    710 mstly clr    none
     00:00    61    43     11   178    (S)    769 mstly clr    none
     01:00    59    45     12   165  (SSE)    803 mstly clr    none
     02:00    59    45     13   182    (S)   1264 mstly clr    none
     03:00    58    45     12   179    (S)   2352 mstly clr    none
     04:00    58    45     10   179    (S)   2120 mstly clr    none
     05:00    56    45      4   190    (S)   1388 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 STATUS
      Telescope drives operational. Current TCC version: 2.8.4
      Current TUI version: TUI 1.2