[vsnet-obs 29919] X, Y, RR Cep

["G.Comello" <comello@astro.rug.nl>]

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                         |

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