Hi Bill,
It is very strange, I made some more experiments and the following are the
results.
1) what I said in my previus message is valid only if I set on extra-user data
UCAC3 (doesn't matter if yes, auto or fixed).
2) if I do not use neither UCAC3 nor UCAC2 I'm able to see the GSC and A2 stars
at any level.
3) If I set only UCAC2 (UCAC3 deselected) I'm able to see at any level the
UCAC2, A2 and GSC stars.
What I said above is valid only if I use the UCAC3 I stored on my HD, if I download the data from internet all works properly.
Cheers, Stefano

--- In guide-user@yahoogroups.com, Bill J Gray <pluto@...> wrote:
>
> Hi Stefano,
>
> Hmmm... you ought to see the GSC stars at all high-zoom levels. If
> you're seeing them at a two-degree field of view, they should also
> show up at smaller fields of view.
>
> Try right-clicking on a "disappeared" GSC star, and I think you'll
> find it is still there. You may get the UCAC3 or A2.0 version first;
> but do a "next" or two, and it will eventually get around to finding
> the GSC data.
>
> Some could easily regard this as a bug, not a feature, because it
> means you can have the same star shown from two or three catalogs. In
> a perfect world, Guide would automagically cross-index stars, and
> recognize when a given star came from more than one catalog. It would
> then _display_ a single star on the chart; but when right-clicked on,
> you'd get data from GSC, UCAC3, and A2.0, plus whatever other
> catalogues might be relevant.
>
> I do have some ideas that might let that be possible eventually.
> (Guide would show UCAC3 stars first; then, when drawing GSC stars,
> it would ask: is this star within (say) 2" of a UCAC3 one? If so,
> assume they're the same, and don't draw the GSC version. Then,
> when drawing A2.0 stars: is it within (say) 2" of an already drawn
> UCAC3 or GSC star? This would be pretty easy to do... had I planned
> on such right from the beginning! The threshhold would have to be
> user-adjustable.)
>
> -- Bill
>