Date: Fri, 28 Dec 2007 14:10:48 -0000 (UTC)
Subject: 3.5m Night Log 20071227
From: "Gabrelle Saurage"
                        Apache Point Observatory
                        3.5m Telescope Night Log
                       Thursday, December 27th, 2007
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
-------------------------------------------------------------------
D.Bowen         D.Bowen                 DIS           21:00  23:58
J.Fullbright    J.Fullbright            ECHELLE       00:02  06:55
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
---------------------------------------------------------------------
 PU07/R     18:03  00:05   3.0   0    0    0   0.2  2.9   0    0    0
 JH02/R     00:05  06:06    0    0    0    0    0   6.0   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
Observing Specialists: G.Saurage
AzVelScales: 590.4, 595.4; 592.5 no change
First half: we had high winds, high humidity and “dust” (aka blowing
snow). Conditions improved enough by 21:00 to open. Humidity hovered just
under the limit for the next few hours, but the sky was clear. We had
moderate to poor seeing all night, at times quite variable.
While closing I could not get the mirror covers to close in auto or manual
at any altitude.
                       ------- 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
 -----------------------------------------------------------------
21:17 dis-slit  -250(-1101) 149  65  -14.1 -11.4 -10.1 -13.0 -13.5    2.20
23:15 dis-slit    12( -990) 105  63  -14.8 -14.4 -13.7 -14.9 -14.7    1.50
00:17 ECHELLE     30(-1802) -20  71  -15.0 -14.9 -14.3 -15.3 -15.0    1.40
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    11     7     22   256  (WSW)   3753   cloudy   lt snow
     17:00    10     9     24   279    (W)    794   cloudy    humid
     18:00     9     7     31   291  (WNW)    602 mstly clr   humid
     19:00     9     6     19   283  (WNW)    419 mstly clr   humid
     20:00     8     0     13   324   (NW)    370 mstly clr    none
     21:00     7     1     17   343  (NNW)    337    clear     none
     22:00     6     0     21   331  (NNW)    297    clear     none
     23:00     6     0      9    17  (NNE)    304    clear     none
     00:00     5     1     18   337  (NNW)    360    clear     none
     01:00     5     0     13   341  (NNW)    297    clear     none
     02:00     5     0      7     2    (N)    321    clear     none
     03:00     8   -10     22   328  (NNW)    129    clear     none
     04:00    10   -24     26   329  (NNW)    117    clear     none
     05:00    11   -33     17   330  (NNW)     85    clear     none
     06:00    13   -34     20   322   (NW)     49    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 1.4.3