Re: TASS database vs. other databases

["Robert J. Bradbury" <bradbury@aeiveos.com>]

On Tue, 24 Aug 2004, Michael Koppelman wrote:

> Why? The astrometry is good enough to use the epoch/ra/dec as a unique
> identifier and can be cross-referenced easily in SIMBAD and such. It
> wouldn't be too tricky to write a script to add Tycho identifiers or
> similar to the data.

Understood.  Perhaps my question should have been put as to what
extent people may have already done this.

(Bear in mind that I am a novice with respect to the contents
of the Hipp/Tych/SIMBAD databases so I am not certain of the
quality that they map onto one another.  Also one gets into
resolution issues when attempting to map one of the more
gross sky surveys onto a finer resolution survey.  I'm unsure
of the degree to which this may be a concern with TASS and
other available database information.  My impression to date
is that there is some amount of interpolation that may be
taking place.)

Thanks,
Robert