I guess e-mail below , belongs to this group vsnet-chat You wrote: "The observer O.Pejcha is apparently and -quite uniquely- overobserving the >wrong stars in the cases of X, Z and RR Cep, and overobserving Y Cep. X, Z and >RR Cep are around minimum now, well in the 14th and 15th magnitude. See also >AAVSO-Bulletin no.63). >Long-period Mirastars should not be observed more often than once in 5 days >or so, to avoid biasing (Manual for Observing Variable Stars by Margaret >Mayall, rev.ed. September 1957, p.10) >-- Georg Comello | Tel. : (31)-50-3634050 Kapteyn Laboratorium | Fax : (31)-50-3636100 University of Groningen | E-mail: comello@astro.rug.nl P.O. Box 800, 9700 AV Groningen | The Netherlands Mr H-G. Lindberg is also doing the same with IZ Cyg, TW Lyr, W Lyr, CHI Cyg and many other mira stars. His estimations are correct but once a day is too much for a Mira star. Hautecler Hubert Lubbeeksestraat 61, 3370 Boutersem, Belgium email: huna@vt4.net " Answer: Well i am doing the observations of some miras often (you don't need to take notice of it) of a special reason. And how can you now that the ESTIMATIONS is correct? Regards H-G. Lindberg