Date: Tue, 16 Mar 2010 07:11:28 -0600 (MDT)
Subject: 3.5m Night Log 20100315
From: "Jack Dembicky"
                        Apache Point Observatory
                        3.5m Telescope Night Log
                          Monday March 15, 2010
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 J.Helsby       J.Gauthier              DIS           --:--  --:--
 S.Moran        S.Moran                 DIS           00:10  07:20
  PROG        SCHEDULED      WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH    D    B    D    B    D    B    D    B
 ------------------------------------------------------------------
 UC05/R     19:20  01:10    5.0  0.1  0.8   0    0    0    0    0
 JH02/R     01:10  07:04     0    0    0    0   5.9   0    0    0
   note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Dembicky
We were closed for much of the first half tonight due to high humidity.  I ran some alt. sweeps
for Nick while we were closed tonight.  Both the up/down sweeps and tracking sweep he requested.
When we did open we found the stars to not be tracking correctly (I saw this problem a few weeks
ago when the corrections were not being applied to the alt drive).  Sure enough that was the
problem.  A call to Fritz and he had things working in a few mins.  Unfortunately we also had a
sticky slitviewer shutter which didn't make the tracking problem immediately obvious.  This cost
us about 40 mins or so of time and unfortunatelly not enough time was left for the 1st half to get
any science.
After several minutes the slitviewer shutter started working better.   Shutter seemed to work much
better all of 2nd half with only a few blank frames.
                ------------- FAILURE LOG --------------
  PROG   INST   FAILURE MODE     TIME
      (STEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
 UC05      D          T/S     00:20  01:00   Alt corrections not being
                                             applied.
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt FWHM
 -----------------------------------------------------------------------
 01:16 dis-slit   315( -223) 108  39  -4.1 -3.5 -3.2 -4.0 -3.8   --  2.00
 03:39 dis-slit   261( -352) -128  85  -4.5 -4.3 -4.0 -4.8 -4.5   --  1.70
 03:47 NA2gdr  1075(23075) -119  84  -4.3 -4.4 -4.0 -4.8 -4.5   clear  2.00
                 ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    30    20      0   342  (NNW)     74   cloudy    humid
     17:00    29    24      1   231   (SW)    857   cloudy    humid
     18:00    33    27      7   257  (WSW)    919   cloudy    humid
     19:00    27    23      5    80    (E)    362  ptly cldy  humid
     20:00    26    22      2   334  (NNW)    134  ptly cldy  humid
     21:00    24    22     17    57  (ENE)     64 mstly clr   humid
     22:00    24    20     23    59  (ENE)    207    clear    humid
     23:00    23    20     18    45   (NE)    166    clear    humid
     00:00    25    19     24    54   (NE)    108    clear     none
     01:00    26    19      9    84    (E)    158    clear     none
     02:00    25    20     17    43   (NE)    260    clear     none
     03:00    25    18     18    60  (ENE)    496    clear     none
     04:00    25    17     16    57  (ENE)    831    clear     none
     05:00    24    15      7    68  (ENE)    741    clear     none
     06:00    22    16     12    35   (NE)    753    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: 2.11.1
      Current TUI version: 1.7.1