Filtering stars to specfic spectral classes

[Lysol]

Is this possible? I want to be able to see only certain classes of stars in the night sky. For example if I wanted to see an M3 I-II star I want to be able to filter out the night sky to only show stars in that category.

[selden]

Celestia does not include that type of filter.

However, one could write a Celx script that would mark those stars with a circular mark that would look somewhat like a "star".

Two examples of similar scripts, marking stars within a specific distance, were recently posted to the Forum.

http://www.celestiaproject.net/forum/viewtopic.php?p=89997

[Lysol]

interesting thanks.

Is there a data base online somewhere that would allow me to brows the HIP and HD cataloges?

I want to be able to be centered around say any given star...and from that star filter out specifc star types.

[Lysol]

hmmm...i tried to use those scripts but both of them caused Celestia to not load properly.

At first I thought it was because I used a simple math conversion for the ly to km on the second one. But i got the same results for both scripts unedited.

first time using a script for celestia...i had the extenstion correct

[selden]

Lysol,

Most professional astronomical catalogs can be downloaded from
http://vizier.u-strasbg.fr/viz-bin/VizieR

Information about individual astronomical objects can be obtained from
http://simbad.u-strasbg.fr/sim-fid.pll

The scripts will crash if your browser window is too narrow when you copy them: that will break the lines in random places and cause a fatal error.