Date: Fri, 19 Jun 2009 05:08:09 -0600
Subject: Night Log 20090618
From: Jeff Coughlin
                     Apache Point Observatory
                     3.5m Telescope Night Log
                     Thursday, June 18, 2009
                                                        ACTUAL
 ASTRONOMER     OBSERVER(S)              INSTRUMENT  START  FINISH
 --------------------------------------------------------------------
 S.McCandliss   K.France,S.McCandliss,B.Fleming DIS  --:--  --:--
 J.Rogers       J.Rogers                     NICFPS  02:20  05:30
  INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 JH04/O     21:18  00:35   3.3   0    0    0    0    0    0    0    0
 JH01/R     00:35  04:52   1.7   0    0    0   0.4  2.2   0    0    0
 note: scheduled times listed include instrument change time
               ------------- ACTIVITY LOG --------------
Observing Specialist: J. Coughlin
LN2 tanks on GFP and TSPEC ran out - only one replacement was
available. Brought the
only tank on the ground level up, but then realized it was for the 1m so put
it back down. Need more LN2, especially for weekend.
Around 19:00 it was noticed the DIS blue temperature was high - got up
to -3.0C. Ion pump was on high load and so I turned it off. Tried
turning off the blue cyrotiger, letting is sit for 30 min, and
restarted. Temp started to come back down, but extremely slowly. Tried
power cycling again with same result. After 6 hours or so its only
around -15C. I've left the blue cryo tiger on, but turned off the ion
pump and blue camera power supply. See PR #1004.
Sky was very opaque from sunset until 02:20. No nearby radar returns or
chance of rain though so tried opening a few times to see if anything
was getting through, but first half observers were not able to see
anything. Same with first half until 02:20 when a hole opened up -
clouds came and went but got useful data until sunrise, as conditions
continued to improve.
Didn't get a chance to take more pinhole images with Agile, but
installed pinole 'filter' in filter wheel 3 and will test on both Spicam
and Agile tomorrow afternoon to compare.
                      ------- 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
 -----------------------------------------------------------------
 02:38 NICFPS   125(  927)   1  59  10.8 12.1 12.2 11.3 11.0   Ks  1.00
               ------------- WEATHER LOG ----------------
                                  Wind                      Precip.or
    Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
   -------------------------------------------------------------------
     16:00    58    39      6   261    (W)   1504   cloudy     none
     17:00    61    40      7   229   (SW)   3214   cloudy     none
     18:00    59    39      6   276    (W)   1512   cloudy     none
     19:00    57    26      3   255  (WSW)   1354   cloudy     none
     20:00    57    31      5   184    (S)   1175   cloudy     none
     21:00    55    31      5   179    (S)   1351   cloudy     none
     22:00    52    31      4   144   (SE)   1685   cloudy     none
     23:00    53    31     11   216   (SW)   1675   cloudy     none
     00:00    53    31     10   181    (S)   1701   cloudy     none
     01:00    53    31      6   184    (S)   1874   cloudy     none
     02:00    52    31      6   196  (SSW)   1437 mstly cldy   none
     03:00    51    43      2   201  (SSW)   1034  ptly cldy   none
     04:00    52    43      2   248  (WSW)   1312 mstly clr    none
     05:00    51    43      6   267    (W)   1418 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: 2.10.0
     Current TUI version: TUI 1.5.1