Date: Thu, 7 Jan 1999 07:36:42 -0700 (MST)
From: Russet McMillan
Subject: 3.5m Night Log 990106
                        WEDNESDAY JANUARY 6, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
York        Mallouris, Rockosi,     Echelle    1/6-7   18:39  05:39
                   York
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
EN03/R     18:39 05:39    0    0    0    0   3.5  7.5   0    0    0
(note: times listed include instrument change time)
                              ACTIVITY LOG
(* means a trouble report has been issued or appended to)
1st half observing specialist: Karen Gloria
The telescope was opened at 16:30 MST.  The engineering time was used
for Echelle testing.  Don York and Connie Rockosi observed
remotely with Chris Mallouris observing from onsite.
The Echelle slit is very nicely focused now!  I used Russet's data on
the position of the NA1 boresite to update the instrument block for
the Echelle guider.  I think the slit is now within a few pixels of
the boresite.  During our tests of the Echelle, the star stayed on the
slit pretty well.  Some minor tweaking of the pointing model and
instrument block are still needed, but both are currently quite
usable.
2nd half observing specialist: Russet McMillan
Second half was clear, and we obtained a number of science exposures
without any difficulties.
There was an attempt to see how deep the echelle guider could see, and
the conclusion was that at magnitudes of 18 or fainter, with exposures
longer than one minute, it was necessary to subtract off a background
frame in order to see the target.  Currently there's no automation for
taking and subtracting a background frame; perhaps something of the
sort should be considered.
                            OBSERVER COMMENTS
                                FOCUS LOG
                             JANUARY 6 1998
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
19:00  Echelle -666(5445)   234  66 2.4/2.5    16   10   ND 2   1.0
#First temp is air, second temp is telescope.
                                 WEATHER
                             JANUARY 6 1998
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    38    14     10    21  (NNE)            clear      none
     17:01    37    13      9    12  (NNE)            clear      none
     18:01    37    12     15   358  (N)              clear      none
     19:01    36    12     12     8  (N)              clear      none
     20:01    38    12     12   351  (N)              clear      none
     21:01    38    13      4   348  (NNW)            clear      none
     22:01    37    12      8   335  (NNW)            clear      none
     23:01    36     9      2   327  (NNW)            clear      none
     00:01    37    11      8   328  (NNW)            clear      none
     01:01    37     9     15   312  (NW)             clear      none
     02:01    37    10     15   328  (NNW)            clear      none
     03:01    38    12     11   306  (NW)             clear      none
     04:01    38    12     17   329  (NNW)            clear      none
     05:01    38     7      5   342  (NNW)            clear      none
     06:01    38     8      9     2  (N)              clear      none
     07:01    39     8      9     1  (N)              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
> 1 micron per 0.1 cu. ft.
                             TELESCOPE STATUS
Primary, secondary, and tertiary mirrors in place and collimated.
Primary support system operational.  Mirror ventilation system in
place.  Telescope drives operational.  Current Remark version: 2.42a.
Current guide software version: GIm Ctrlv3.0b15.
- Karen Gloria, Russet McMillan