- Center for backyard astrophysics, cba ...cba.phys.columbia.edu
- Puckett Observatory specializes in photographing comets and deep sky objects. Also home of the cometwatch program ...www.cometwatch.com
- Welcome page of The Amateur Sky Survey, a project to monitor stars of magnitude 8-14 ...www.tass-survey.org
- The world's only Extrasolar Planet Search project led by amateur astronomers using spectroscopy and radial velocity methods.www.spectrashift.com
