Links

Here are links to very useful websites for observational astronomy.

American Association of Variable Star Observers: www.aavso.org

Delaware Astronomical Society:                                www.cis.udel.edu/~chester/das
   

Christian Buil's Spectroscopy Page:                         www.astrosurf.com/buil

Valerie Desnoux's Spectroscopy Page:                   www.valerie.desnoux.free.fr/

Maurice Gavin's Spectroscopy Page:                       www.astroman.fsnet.co.uk/

Optec, Inc:                                                                     www.optecinc.com

Santa Barbara Instrument Group:                               www.sbig.com/

Tycho Cat Query Page:                                               www.archive.ast.cam.ac.uk/hipp/tycho.html

Spectroscopic standard stars:                                   www.eso.org/observing/standards/spectra/