Date: Sat, 29 Mar 2008 13:05:16 -0000 (UTC)
Subject: 3.5m Night Log 20080328
From: "Gabrelle Saurage"
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Friday, March 28th, 2008
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
-------------------------------------------------------------------
M.Shin          M.Shin,M.Oguri          DIS            19:40  01:03
P.Szkody        P.Skody,A.Mukadam       AGILE          01:15  05:27
T.Murphy        R.McMillan              APOLLO         05:35  07:00
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
---------------------------------------------------------------------
 PU05/R     20:15  01:10    0    0    0    0   4.9   0    0    0    0
 UW06.P/R   01:10  05:31    0    0    0    0   0.9  3.5   0    0    0
 DD01.R/R   05:31  06:46    0    0    0   0.2   0   0.3  0.8   0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
Observing Specialists: G.Saurage
Good news: Louvers are working again.
Bad news: I had some trouble with the test version of TUI released today
1.5a4 (see PR 779), so I reverted to 1.5a2.
Dust levels remained moderately high all night, but not too high to cause
problems. Seeing was moderate most of the night becoming highly variable
second half.
When switching to Apollo in the morning the tertiary clamp failed to
close. I homed axis E, position error -000001520, and then moved again to
BC1. Seemed to work. There also seemed to be a jump in pointing in the az
(=tertrot) direction of 35 arcsec.
Apollo reports 4 reflectors.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
DD01      A          T/H      05:28  05:38   Tert failed to clamp
               ---------------- FOCUS LOG ---------------
Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt FWHM
 -----------------------------------------------------------------
 19:08 dis-slit   83( 137) 160  66   7.6  9.3  8.8  8.0  7.3     1.28
 20:07 dis-slit   26(  12) 257  77   8.1  7.9  8.2  7.1  7.5     0.90
 00:49 AGILE      76(-275)  31  25   5.8  5.9  6.4  5.2  5.8     1.90
 04:47 APOLLO     25( 781) -11  30   4.7  4.2  4.7  3.8  4.4     1.70
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    53    17     16   200  (SSW)           clear     none
     17:00    53    16     22   224   (SW)   1959    clear     none
     18:00    52    14     23   213  (SSW)   1930    clear     none
     19:00    47    18     15   191    (S)   2070    clear     none
     20:00    46    14     19   193  (SSW)   2143    clear     none
     21:00    46     8     17   193  (SSW)   2025    clear     none
     22:00    46     5     19   205  (SSW)   1934    clear     none
     23:00    46     7     16   217   (SW)   2029    clear     none
     00:00    45    12     17   207  (SSW)   2246    clear     none
     01:00    44    16     18   198  (SSW)   2218    clear     none
     02:00    42    17     17   233   (SW)   2193    clear     none
     03:00    42    18     19   233   (SW)   2182    clear     none
     04:00    41    17     15   251  (WSW)   2127    clear     none
     05:00    40    17     11   245  (WSW)   2154    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 1.4.5