RE: Minimum spanning circles and Voronoi diagrams

[Chris Albertson <chrisalbertson90278@yahoo.com>]

Arne,

what's your suggextion for dealing with doubles in UCAC
that are not resolved by TASS?  Do we pick one of the pair
and asign all observations to it. Asigning the observation to
the closest match will have kind of a random ping pong
effect.  Eventually we will have to look for these and
create a new catalog object to stand for the unresolved
double.  It gets harder when it resolves in only one
color or b 2 TASS sites but not the others.  I agree
catalog seeding is a good idea but it can't solve these
types of problems.  


--- aah@nofs.navy.mil wrote:
> I think you need to read Michael Richmond's notes on tenxcat
> and why allowing the import starlists to define the star
> position is the wrong approach.  In general, you will end
> up with multiple 'stars' in some positions where the matching
> fails.  It is better to use a known input catalog as your
> master star list.  Since something like UCAC has sufficient
> resolution to identify everything that will be classified
> as a 'double' in the Mark IV catalog, you have the information
> necessary to correctly match objects.
>   You are not generating the first catalog of objects in the
> sky.  Use the prior knowledge!
> Arne
> 


=====
Chris Albertson 
  Home:   310-376-1029  chrisalbertson90278@yahoo.com
  Cell:   310-990-7550
  Office: 310-336-5189  Christopher.J.Albertson@aero.org

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