Hello Bill,

When I have activated colour stars and zoom to Sigma Orionis, I see the
difraction patern arround the brighter star. When I right click over one of
this false blue stars, Guide say me that this is an Artifac, so if Guide
knows what it is, why don't let me hide them?

On the same star, when I zoom to level 11 or 12 I see Sigma (mag 3.79), Hip
26551 (mag 5.68) and V1030 Ori (mag 6.36) of the same size. They are very
diferent in size since level 7. At level 8 Hip 26551 disapear. At level 9
apear again but from here the sizes are erroneous. Also, I have selected a
saturation of colors of 40% but Hip 26551 apear as deep red, but the
information for Hipparcos say that is a B0 star!. Something wrong is
happening here..


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Saludos,
Rafael Barbera
Grup d'Estudis Astronomics (GEA)
http://usuarios.lycos.es/rbarbera/