Re: TN-107

[Tass Mailing List <tass@mail.alembic.net>]

Date: Tue, 23 Oct 2007 20:43:55 -0500
From: Thomas F. Droege <droege@fastmail.fm>
To: Tass Mailing List <tass@mail.alembic.net>
Subject: Re: TN-107

Doug,

Don't know, I have been working with Patrick Will's software as polished
by Michael when he was here.  I think I gave Steve sparse and dense
fields to work on.  I have not really looked at his work yet.  My effort
at the moment is spent in getting the data in shape for practical work.

The dvds you have are the complete raw data set.  I first collected all
the measurements of each star together.  I have finished dividing this
data into 1 degree bins for tom2.  There are two files for each bin.
One is all the data in the bin, the next is a summary file with one line
for each star which has the number of measurements, the V, v_sigma, I,
i_sigma.  I am working on (done tomorrow?) another set of bins which
will have all the stars removed which are within 8 pixels of any other
star.  There is also a summary file for this set.  I find a 1 degree bin
a reasonable chunk of data for work.

My next step is to make another set of cuts on the data.  A probable
next cut is mag between 11-13 and a minimum of 20 measurements.  By the
time this is done, the whole data set should fit on 3-4 dvds.  Then I
can offer it to others who want to find new variables.

Tom


On Tue, 23 Oct 2007 18:00:42 -0700 (PDT), "Tass Mailing List"
<tass@mail.alembic.net> said:
>
> Date: Tue, 23 Oct 2007 20:58:27 -0400
> From: Doug Welch <welch@physics.mcmaster.ca>
> To: Tass Mailing List <tass@mail.alembic.net>
> Subject: Re: TN-107
>
>
> Hi Tom,
>
> Very interesting. Is there further improvement once Steve Bickerton's
> analysis is run on the non-crowded stars?
>
> Cheers,
> Doug
>
> Tass Mailing List wrote:
> > Date: Mon, 22 Oct 2007 15:55:24 -0500
> > From: Thomas F. Droege <droege@fastmail.fm>
> > To: tass@tass-survey.org
> > Subject: TN-107
> >
> > Hello Everyone,
> >
> > For years I have been trying to find something, *anything* that would
> > improve the scatter of the tass data.  I have looked at everything that
> > I could think of.  Does the bad data look better than the "good" data?
> > No, when I, for example, take clear nights and compare them with hazy
> > nights.  Many other things have been examined with no success.  Finally
> > I have found something that seems to work.  You will find it in TN-107:
> >
> >  http://stupendous.rit.edu/tass/technotes/tn0107.html
> >
> > Andrew are you here?
> >
> > There is lots more to be done.  I will work first on "how close is
> > close".  It is slow going since I am not very clever when under
> > sedation.  At least I figure that is as good an excuse as any.
> >
> > Tom Droege
>
>
-- 
  Thomas F. Droege
  droege@fastmail.fm