Date: Thu, 2 Jul 2009 04:49:50 -0600 (MDT)
Subject: 3.5m Night Log 20090701
From: "Jack Dembicky"
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Wednesday, July 01, 2009
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 T.Yan          T.Yan                   TSPEC         20:00  00:50
 M.Gladders     E.Wuyts                 NICFPS        --:--  --:--
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 CU01/R     21:19  01:05    0    0    0    0    0   3.8   0    0    0
 UC03/R     01:05  04:56   2.8  1.1   0    0    0    0    0    0    0
  note: scheduled times listed include instrument chanyes, some ge time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Dembicky
 Humidity went over closure limits just before the 2nd half switch.  I let the first half observer
finish their observations (they were almost out of time anyway) and then closed.  Humidity stayed
above closure level for the entire 2nd half of the night and clouds came in around 03:15 as well.
TSPEC Aux tank was intermitently reading high during the 2nd half (after I took it off the
telescope).  I filled it yesterday so it should have LN2 in it.  I noticed that the H1 reading
somewhat followed the bad AuxTank reading (they both changed by similiar amounts, but I don't
think H1 has an alarm set).  It too was reading high (well about the same value ad the AuxTank).
 SpecCam was reading cold and as I went up the list the values got warmer (as expected) so I
assume the AuxTank and H1 readings are in error.  Nick may want to check for an ice plug but it
appeared to take LN2 Tuesday and the temp seems stable at around 151K.
                ------------- ACTIVITY LOG --------------
  PROG   INST   FAILURE MODE     TIME
      (STEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt FWHM
 -----------------------------------------------------------------------
20:46 TSPEC   384( 1213)   2  54  14.3 18.7 16.1 17.3 15.0   Ks  1.20
                 ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     18:00    64    41      9    58  (ENE)    582  ptly cldy   none
     19:00    62    42     16    74  (ENE)    527  ptly cldy   none
     20:00    59    44     17    76  (ENE)    689 mstly clr    none
     21:00    57    47     17   113  (ESE)    680    clear     none
     22:00    56    49     15    96    (E)    745    clear     none
     23:00    55    48     17    76  (ENE)    831 mstly clr    none
     00:00    54    50     14    84    (E)   1023  ptly cldy   none
     01:00    54    50     15    77  (ENE)   1254  ptly cldy  humid
     02:00    53    51     16    81    (E)   1560  ptly cldy  humid
     03:00    53    51     16    76  (ENE)   1540 mstly cldy  humid
     04:00    53    50     15    77  (ENE)   1554   cloudy    humid
     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