Thom Gandet wrote: > > 2) The Ouda photometry, on the other hand for their comparison > star (GSC 3723-65) is derived from Tycho photometry. Sheesh. That should've read: 2) The Ouda photometry, on the other hand, used GSC 3723-65 for their comparison star, whose magnitude is derived from Tycho photometry only. Thom