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Open star clusters : Hr Trace software

http://xoomer.virgilio.it/hrtrace/index.htm

This website from Valter Arno provides information on star clusters together with a free educational and perhaps possible preliminary research code, devoted to photometric open cluster studies. This code works only with UBV matched values, but a patch devoted to solving this code constraint and upgrading it, also to R and I Johnson colours, is now under development. Future developments are planned involving Stromgren photometry. Also available are recent empirical calculations, information on photometric diagrams, and a bibliography. The aim of the site and of the author's work is to assist amateurs in photometric studies of galactic clusters.
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