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This site contains some practical knowledge and observations concerning variable stars and asteroids, especially lightcurves, charts and diagrams.
The lightcurves were plotted from my visual observations database. Some of them you may find in the AAVSO database which I have been cooperating for 20 years.
My code in AAVSO is KTZ. I also observe asteroid occultations but with only one positve hit so far (420 Bertholda - 26 Aug 2003).