Stellar and Astrometric
Links
USNO PMM Star Catalogs
http://www.nofs.navy.mil/projects/pmm/catalogs.html
USNO is making the USNO-SA2.0 catalog (54,787,624 stars in all on one CD-ROM) available for free. The full USNO-A2.0 catalog (526,230,881 stars on 10 CD-ROMs) is also available provided you can provide a brief explanation of why USNO-SA2.0 is not sufficient. That's information on over half a billion stars!
The 50 Nearest Stars
http://www.cosmobrain.com/cosmobrain/res/nearstar.html
Table with details about the 50 nearest stars. Names, distances, constellations, spectral types, magnitudes and coordinates.
Nstars Online Spectra
http://stellar.phys.appstate.edu
A spectroscopic survey of 3600 nearby stars within 40pcs earlier than M0. Contains real-time spectral plots, and coordinate lists. Also MK standards.