So as not to drop the ball, would any of the clubs reading Az-Observing be willing to take the initiative on this for one of their regular star parties? Since I am in SAC, SAC? Stan Brian Skiff wrote: > I'll second the notion of a refractor-fest, though it could be >done at some regular event. I'll be pleased to bring along my "vintage" >(450mm focal length) 70mm Pronto so you can see the chromatic error >of an ordinary doublet. > > > -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.